Planet Earth II (6 eps) BBC 1 (DVD)

Code: TD4721

Type: Audio Visual

Key Stages: 2 - 4

Description

Episode length: 1 hour                     
 

Wildlife documentary series presented by David Attenborough.

Episode 1 -  Islands

Remote islands offer sanctuary for some of the planet's strangest and rarest creatures. The rare pygmy three-toed sloth enjoys a peaceful existence on an idyllic Caribbean island, while nesting albatross thrive in predator-free isolation. But island life always comes at a cost. On the Galapagos Islands, young marine iguana must escape an onslaught of deadly racer snakes the moment they hatch from the sand. On the sub-Antarctic island of Zavodovski, life gets more extreme still. Every day, one and a half million penguins risk being battered against the rocks by fierce waves as they try to get on and off the island.

Episode 2 - Mountains

The great mountain ranges are some of the planet's most spectacular landscapes, but they are unforgiving places to live in, and only a few animals have what it takes to live at exteme altitude. Mountain animals are amongst the most elusive in the world, and this film provides unique and intimate glimpses into their secretive lives. Witness the moment four snow leopards come together when a mother and cub become trapped between two rival males. Join grizzly bears as they dance against trees to rub off their winter fur and soar with golden eagles hunting amongst Europe's snow-capped peaks.

Episode 3 - Jungles

Jungles provide the richest habitats on the planet - mysterious worlds of high drama where extraordinary animals attempt to survive in the most competitive place on earth. Flooded forests are home to caiman-hunting jaguars and strange dolphins that swim amongst the tree tops, while in the dense underworld, ninja frogs fight off wasps and flying dragons soar between trees. Acrobatic indri leap through the forests of Madagascar, while the jungle night conceals strange fungi and glow-in-the-dark creatures never filmed before.

Episode 4 - Deserts

The world's deserts are lands of extremes that force animals to come up with ingenious ways of coping with hostile conditions, giving rise to the most incredible survival stories on earth. A pride of desert lions are so hungry they risk hunting a giraffe several times their size, while male sandgrouse fly 120 miles each day to the nearest waterhole and dice with death to collect water for their chicks. Filmed for the first time, a tiny bat does battle with one of the world's deadliest scorpions, and in Madagascar, a locust swarm of biblical proportions is seen as never before.

Episode 5 - Grasslands

Grasslands cover one-quarter of all land and support the vast gatherings of wildlife, but to survive here animals must endure the most hostile seasonal changes on the planet. From Asia's bizarre-looking saiga antelope to the giant anteaters of Brazil, grassland animals have adapted in extraordinary ways to cope with these extremes. In the flooded Okavango, lions take on formidable buffalo in epic battles, on the savannah, bee-eaters take advantage of elephants to help catch insects and, on the freezing northern tundra, caribou embark on great migrations shadowed by hungry Arctic wolves.

Episode 6 - Cities

Cities are growing at a faster rate than any other habitat on Earth. They may seem an unlikely place for animals to thrive, but they can be a world of surprising opportunity. Leopards prowl the streets of Mumbai, peregrine falcons hunt amongst New York's skyscrapers, and a million starlings perform spectacular aerial dances over Rome. In Jodhpur, langurs are revered as religious deities and in Harar, locals live in harmony with wild hyenas. Many animals, however, struggle to cope in the urban jungle. As the architects of this environment, can humans choose to build cities that are homes for both them and wildlife?

We make every effort to ensure resources are appropriate for school use, however please watch prior to use to ensure suitability for your class.

 

Gangsta Granny - CBBC (DVD)

Code: TD4730

Type: Audio Visual

Key Stage: 2

Description

Duration: 1 hour and 7 minutes.

Comedy drama based on David Walliams's best-selling children's book. Ben hates spending time with his boring granny while his parents are off ballroom dancing. Little does he know that his granny has a secret. Together they go on an adventure and become the best of friends.

Starring: Reece Buttery, Julia McKenzie, David Walliams, Miranda Hart, Harish Patel, Rob Brydon

 

The Maths Channel: Year 1 & 2 (10 eps) BBC 2 (DVD)

Code: TD4740

Type: Audio Visual

Key Stage: 1

Description

Episode length: 10 mins

Year 1

2D shapes - Examines how to identify different 2-dimensional shapes using clues such as the number of corners and sides. Also looks at how to create new shapes by folding square pieces of card and cloth.

3D shapes - This episode looks at three-dimensional shapes that can be found all around us, such as cubes, cuboids, cylinders and spheres. Plus the different uses for these shapes.

Addition - The programme shows that numbers can be added together in any order. Even if the numbers are swapped around, they still add up to the same total.

Difference - The difference between two numbers is the same whether you count on or count back.

Subtraction - The programme demonstrates that you can subtract one or more from another number at a time. When taking away, or minusing, one number from another, a useful pattern emerges.

Year 2

Handling data - The programme explores how to handle data, and why and to whom this might be useful.

Place value - Looking at how number lines and squares can be useful tools for arranging numbers in order from lowest to highest.

Position and direction - The programme gives examples of words or phrases used to describe where an object or person is in relation to another. Plus a look at the directions used to help someone find their destination.

Reading scales - How to measure something using the appropriate scale. We look at types of scales and how to read them.

Subtractions - Demonstrates what happens if you add a number to another and then subtract it, or take away a number from another and then add it on again: you end up with the same number you started with.

 

The Maths Channel: Year 3 & 4 (10 eps) BBC 2 (DVD)

Code: TD4741

Type: Audio Visual

Key Stages: 1 - 2

Description

Episode length: 10 mins

Year 3

Measures - Measurements big and small from past and present and some slithery sums at the zoo.

Money - Cashing-up at the cafe and coin capers with Mr Numbervator.

Multiplication -

Numbers - Sorting by hundreds, tens and units with Mr Numbervator, room number problems for the Chuckle Brothers, and it is odds or evens at the Number School.

Time - Timekeeping at the zoo and clockwatching with the Chuckle Brothers.

Year 4

Decimals - Dancing decimals at the Number School; and shelf-building is a piece of cake for the Chuckle Brothers.

Division - The Chuckle Brothers cause chaos with chairs and tables, and there are punting problems on the river.

Fractions - Featuring half measures in an Indian restaurant and whole fractions with Mr Numbervator.

Ordering numbers - Featuring shopping in a price range, Number School gymnastics, and more apples than the Chuckle Brothers know what to do with.

Shapes -  In this episode, solid shapes plus perfect packaging.

 

The Maths Channel: Year 5 & 6 (13 eps) BBC 2 (DVD)

Code: TD4742

Type: Audio Visual

Key Stage: 2

Description

Episode length: 10 mins

Year 5

Area - Animated turtle tiles plunge into a pond, and the Chuckle Brothers find there's more than one way to cut a carpet. Plus, how do the experts measure area?

Data handling -

Fractions -

Negative numbers -

Shapes -

Year 6

Area and perimeter - The spoof news programme introduces Makeover Maths, in which Handy Andy Kane redesigns young David's room - making good use of maths in the process.

Decimals - The spoof news programme explores decimals, with guest star athlete Kelly Holmes.

Fractions and percentages -

Measuring length - The spoof news programme introduces Makeover Maths, in which Handy Andy uses maths to measure and redesign Sinead's room.

Mental calculations - Kenneth Confronts investigates the Big Deal News Bar in this episode of the spoof news show. Plus, makeover maths.

Properties of numbers - The spoof news programme features a Wrong Numbers animation where only certain numbers are allowed into a nightclub. Andy Kane presents makeover maths, and Kjartan Poskitt has more street maths.

Units of measurement - Kenneth challenges a dodgy market trader in the spoof news programme Kenneth Confronts, and there's an Olympiad sports quiz hosted by athlete Kelly Holmes.

Using a calculator - The spoof news programme looks at using a calculator. Kenneth investigates a burger van's charges in Kenneth Confronts, and there's street maths with Kjartan Poskitt.

 

Telling Tales: French (7 eps) BBC 2 (DVD)

Code: TD4735

Type: Audio Visual

Key Stages: 2 - 3

Description

Episode length: 5 mins

The following episodes are translated into French. The English versions are also included.

1. Anansi and Turtle - Anansi invites Turtle into her home to share a meal, but contrives to eat all the yams herself, leaving Turtle hungry. Turtle returns the compliment by inviting Anansi to join him - and cleverly gets his own back. 

2. Midas - Rival rap stars Midas and Pactolus go head-to-head to win a million-dollar recording contract. When Midas loses, he wishes he had the Golden Touch like Pactolus, but his wish has disastrous consequences.

3. Narcissus - In a modern spin on the classic Greek myth, Narcissus's good looks and popularity turn him into the hottest star on the planet. When Narcissus dismisses the help of a trusted friend, his increasing vanity leads to his downfall.

4. The Butterfly Lovers - In this traditional Chinese tale, Zhu disguises herself as a boy so that she can go to school and learn. But when she falls in love with Liang, one of her classmates, the difference in their backgrounds leads to a tragic ending.

5. The Hare and the Tortoise - This version of the classic race between the Hare and the Tortoise takes place on wheels. Hare drives a motorbike, while Tortoise struggles to keep up on his skateboard.

6. The Sun and the Wind - The weather over Barcelona takes an unexpected turn when the Sun and the Wind fight over who is the most powerful. Tornadoes, forest fires, heat waves and torrential rain ravage the region, creating an interesting challenge for the local news programme.

7. The Town Rat and the Country Rat - Parisian Town Rat misses his sweetheart, the Country Rat, so he decides to go and visit her. The flies, cows and dirt being too much for him, he invites her to come back with him to Paris. She finds the city too noisy and frightening, but they finally agree on a compromise.

 

Telling Tales: Spanish (6 eps) BBC 2 (DVD)

Code: TD4738

Type: Audio Visual

Key Stages: 2 - 3

Description

Episode length: 5 mins

The following episodes are translated into Spanish. the English versions are also included.

1. Anansi and Turtle - Anansi invites Turtle into her home to share a meal, but contrives to eat all the yams herself, leaving Turtle hungry. Turtle returns the compliment by inviting Anansi to join him - and cleverly gets his own back.

2. Midas - Rival rap stars Midas and Pactolus go head-to-head to win a million-dollar recording contract. When Midas loses, he wishes he had the Golden Touch like Pactolus, but his wish has disastrous consequences.

3. Narcissus - In a modern spin on the classic Greek myth, Narcissus's good looks and popularity turn him into the hottest star on the planet. When Narcissus dismisses the help of a trusted friend, his increasing vanity leads to his downfall.

4. The Sun and the Wind - The weather over Barcelona takes an unexpected turn when the Sun and the Wind fight over who is the most powerful. Tornadoes, forest fires, heat waves and torrential rain ravage the region, creating an interesting challenge for the local news programme.

5. The Town Rat And The Country Rat - Parisian Town Rat misses his sweetheart, the Country Rat, so he decides to go and visit her. The flies, cows and dirt being too much for him, he invites her to come back with him to Paris. She finds the city too noisy and frightening, but they finally agree on a compromise.

6. Jason And Medea - When the planet's unique source of energy, the Golden Crystal, is stolen by the space pirate Tartarus, Jason and his sister Medea have to use all their courage and talents to retrieve it and bring it back to Earth.

 

Andy's Wild Adventures (39 eps) CBeebies (DVD)

Code: TD4743

Type: Audio Visual

Key Stage: 1

Description

Episode length: 15 mins

Andy Day and Kip the cat go all around the world in search of weird and wonderful animals.

1. Australian Adventure - Andy and Kip embark on another wild adventure. Their mission is to get up close and take photos of some of the weird and wonderful animals that live in Australia. Together they meet a platypus, an echidna and Andy even gets to dance in the desert with a thorny devil, which is how Andy earns his nickname of Sandy Andy.

2. Beavers - Andy and Kip go on a wild adventure to Yellowstone National Park in North America, home to the beaver. With powerful front teeth, beavers are capable of chewing down trees and Andy watches one do just that. He then follows a beaver into the water to see it building a dam, before diving into its underwater lodge to meet the rest of the family.

3. Black Bears - Andy takes Kip on a wild adventure to see black bears in North America. Andy follows a buzzy bee that leads him to the black bears, who are eating delicious honey and climbing trees with their cubs.

4. Bowerbirds - Andy and Kip go on a wild adventure to the second largest island in the world, New Guinea, home to the bowerbird, a bird which decorates its nest with bright flowers and colourful objects to attract a mate. Along the way, Andy meets a bird of paradise that's a dab hand at dancing. Naturally, Andy tries his hand at dancing like a bird, but fails to impress Kip.

5. Bull Frogs - Andy and Kip embark on another wild adventure, this time to see giant bull frogs in the grassy plains of Southern Africa. These frogs live underground, only emerging, much to Andy's surprise, when it starts to rain. After witnessing a spectacular water fight, Andy discovers their more caring side and with the help of Kip's latest invention, the fabulously fun folding spade, Andy helps a daddy bull frog to dig a ditch to help move some tadpoles from one puddle to another.

6. Caiman - Andy and Kip embark on a wild adventure to see caimans in South America. Andy discovers an underground nest of eggs just as they are beginning to hatch. He witnesses first hand just how careful the mother caiman is at looking after her newborns as she carries them gently down to the river in her mouth.

7. Capuchin Monkey - Andy takes Kip on a wild adventure to see capuchin monkeys in Brazil. He watches the clever monkeys use rocks to crack open scrumptious nuts. Andy has a go but ends up using Kip's latest invention to split open the nut.

8. Chacma Baboons - Andy and Kip travel to South Africa on a mission to track down some chacma baboons. These monkeys live by the sea and have learned to eat all sorts of shellfish found on the shore. They are particularly fond of mussels, just like Andy, and so with the help of Kip's perfectly portable pressure cooker Andy cooks up a seafood treat and enjoys a picnic beside the sea with some baboons.

9. Chameleons - Andy and Kip visit Tanzania in Africa in search of the Jackson's chameleon. Chameleons are experts in camouflage and in order to find them, Andy has to put on a special camouflage costume of his own that Kip has made for him. The costume helps him to get really close to a chameleon and Andy watches in amazement as it catches a insect with a super-long sticky tongue.

10. Chimpanzees - Andy and Kip head to the jungles of Africa in search of chimpanzees. Andy finds a family of chimps and discovers that they use tools to help them to eat. One baby chimp shows Andy that by using a stick, it is able to fish for termites in an underground nest. With the help of Kip's fast and fabulous finding device, Andy tries his hand at termite fishing.

11. Chinstrap Penguins - Andy takes Kip on a wild adventure to see chinstrap penguins in the Antarctic. Andy dives through the icy water so he can join the penguins on a fishing trip. Then he follows them up the steep cliffs to see the penguins deliver fish to their hungry chicks.

12. Elephants - Andy takes Kip on a wild adventure to see elephants in Kenya. He watches as they cover themselves in dust to stay protected from the sun and manages to get himself really dirty. Andy takes a bath with elephants to get all cleaned up.

13. Emperor Penguins - Andy takes Kip on a wild adventure to see emperor penguins in Antarctica. He huddles up in a group of penguins to try and stay warm and even finds a cosy spot under one of the daddies, which ends up being a little bit too comfy.

14. Flamingos - Andy takes Kip on a wild adventure to see flamingos in Kenya. He dances with a million pink flamingos and then uses Kip's invention to surf across the mud so he can visit the tiny chicks in their nest.

15. Fruit Bats - Andy and Kip embark on a wild adventure to see fruit bats in Africa. With the help of Kip's latest invention, the big dipper upside-down flipper, Andy experiences life as a bat and goes on a truly magical flight in the Kipmobile.

16. Gannets - Andy and Kip head to South Africa for a wild adventure in search of gannets. These birds can dive into water from a great height at incredible speeds in search of a fish supper. Naturally, Andy tries his hand at diving into a school of fish just like a gannet. While underwater he has a whale of a time - quite literally, as he swims alongside an enormous whale.

17. Giant Tortoises - Andy and Kip head to the Galapagos Islands in South America for a wild adventure in search of giant tortoises. These reptiles can live up to 150 years old, weighing as much as four Andys put together. Along the way, Andy discovers the tortoises have a special relationship with a tiny bird called a Galapagos finch, which keeps the tortoises' skin clean and bug free.

18. Grasscutter Ants - Andy takes Kip on a wild adventure to see grasscutter ants in Argentina. Andy marches along with millions of ants and climbs high up the grass to get a better view. He even goes into their nest to see how they make food.

19. Grizzly Bears - Andy and Kip embark on a wild adventure to see grizzly bears in Alaska. To get close to the bears, Andy shrinks to the size of a salmon and swims with them upstream where the bears are waiting. Andy tries a spot of fishing, just like the bears, but finds it much harder than he had expected!

20. Hippos - Andy and Kip embark on another wild adventure, this time to Africa in search of hippos. Amazingly, hippos make their own suncream which helps protect them from the hot African sun - so with the help of his gizmo, Andy shrinks down in order to climb on top of a hippo to get a closer look. Andy gets more than he bargained for when the hippos wakes up and starts running at great speed. Luckily, Kip is on hand to rescue him.

21. Lemurs - Andy and Kip embark on a wild adventure to the island of Madagascar in search of lemurs. Lemurs can jump huge distances from tree to tree and along the ground and so with the help of Kip's invention, the brilliant bouncy helpful hopper, Andy gets to hop along with them. Unfortunately, the helpful hopper seems to have a mind of its own and catapults Andy up into the clouds.

22. Macaques - Andy and Kip embark on another wild adventure to see Japanese macaques in the snowy mountains of Japan. Andy finds the macaques bathing in steaming hot springs and joins them for a nice warm dip. Soaking in the steaming water, he watches the monkeys groom each other and find food underwater using only their feet. Naturally, Andy tries his hand at both.

23. Mandarin Ducks - Andy and Kip embark on another wild adventure to see mandarin ducks in Russia. These ducks nest high up in trees to stay safe from predators and when they hatch, the chicks have to jump to the ground. Andy notices one chick is too scared to jump and so, using Kip's super special self-blowing balloon, flies to its aid. The chick lands safely, but the balloon has a mind of its own and Andy flies up, up and away.

24. Marine Iguanas - Andy and Kip head to the Galapagos Islands in the Pacific Ocean for a wild adventure in search of marine iguanas. These lizards eat seaweed that grows on rocks on the sea bed and, using his underwater rocket on his gadget pack, Andy follows some iguanas on a deep-sea mission. He also discovers they have a rather nasty habit of snorting sea water out of their nostrils and gets soaked in the process. Luckily Kip's wondrous wet-wiping windscreen glasses help to keep some of the splashes off his face.

25. Marsupials - Andy and Kip embark on another wild adventure, in search of animals that live in Australia. Using his rocket pack, Andy flies up to the top of a eucalyptus tree to meet some koalas carrying their young and eating leaves. Then he finds some of Australia's infamous hoppers and has a bouncy adventure of his own when he climbs into the pouch of a kangaroo.

26. Meerkats - Andy takes Kip on a wild adventure to see meerkats in South Africa. Andy finds the meerkats are as sleepy as he is. He has his picture taken with them and then sets off find some insects so the babies can eat some breakfast.

27. Monarch Butterflies - Andy and Kip embark on another wild adventure to see monarch butterflies in Mexico. Together they witness millions of sleeping butterflies hibernating for the winter. The sun comes out and Andy watches them wake up and take to the skies. Not wishing to miss out, Andy uses Kip's latest invention, the gloriously groovy gliding gadget, and joins them for a flutter in the air!

28. Mountain Gorillas - Andy takes Kip on a wild adventure to see mountain gorillas in Uganda. Andy watches the funny gorillas wrestle and swing from the branches. Then he climbs high up in the trees to see them build nests from delicious leaves.

29. New Zealand Penguins - Andy and Kip embark on another wild adventure to New Zealand in search of crested penguins. Andy shrinks to the size of a penguin and follows them on their daily trek from the forest and down a cliff to the ocean where some chicks are going fishing for the first time. Unlike the penguins, Andy is struggling to climb down the cliff until he remembers to use Kip's latest invention, the completely cool kitty kite, which helps him fly down to the shore in order to witness this amazing spectacle.

30. Okavango Safari - Andy and Kip embark on another wild adventure, this time to the Okavango Delta in Africa in search of the huge variety of animals that come to the delta to drink. The rain water that gathers there is enough to fill 12,000 Olympic-sized swimming pools so it's not surprising that Andy takes a dip himself alongside some baboons, hippos and even a herd of elephants going for a swim.

31. Orangutans - Andy and Kip embark on another wild adventure to the rainy jungles of Borneo, to watch orangutans making umbrellas out of leaves. Along the way, Andy tries his hand at swinging on a vine, just like the orangutans, but he discovers it's not as easy as it looks and ends up falling into a river. Luckily, a passing orangutan in a canoe comes to the rescue.

32. Ostriches - Here, they embark on another wild adventure to see ostriches in Namibia. Andy gets to see inside an ostrich egg with the help of Kip's latest invention, the extra-extraordinary X-ray sunglasses. He gets to see a baby chick hatch and joins the newborns as they learn to walk. When a lion turns up, Andy makes his escape on the back of a speedy adult ostrich.

33. Otters - Andy and Kip embark on another wild adventure to see otters in Yellowstone National Park. With the help of Kip's super-speedy snow shoes, Andy is able to walk with ease on the snowy ground and eventually finds a family of otters fishing in a frozen lake. A nearby coyote smells the fish they have caught and Andy watches in amazement as the coyote digs down into the snow to steal it.

34. Polar Bears - Andy and Kip embark on a wild adventure to the frozen arctic in search of polar bears. Andy finds a family of polar bears emerging from their snowy den and watches as they make their way down a slippery snowy slope for the first time to go in search of a meal. Andy hasn't got the big paws for walking on snow like the polar bears and begins to slide down and down the hill. Luckily Kip's on hand to rescue him as always.

35. Prairie Dogs - Andy and Kip embark on a wild adventure to the grassy plains of North America in search of prairie dogs. These animals live in underground burrows and make different sounds to warn each other of any approaching predators. When a hawk is spotted, Andy shrinks to the size of a prairie dog and jumps down the burrow to escape. Using Kip's awesome alarm alert, he scares the hawk away and the prairie dogs all emerge for a celebratory dance.

36. Sengi - Andy takes Kip on a wild adventure to see sengis in East Africa. The super-fast sengi chases after insects at top speed, so Andy decides to race it using Kip's Really Rapid Rocket Boots.

37. Strawberry Dart Frogs - Andy and Kip embark on another wild adventure to see strawberry poison dart frogs in Central America. With the help of Kip's latest invention, the clever cat climbing rope, Andy follows a mother frog carrying her baby tadpole up a tree. Once up there, he shrinks to the size of a tadpole and goes swimming with the youngster in a miniature tree-top pond.

38. Tigers - Andy and Kip travel to India on amission to get up close to tigers. Andy ends up playing hide and seek with some cubs, but their characteristic orange and black stripy coats keep them well hidden in the long grass. When it's Andy's turn to hide, they easily find him up a tree. So he decides to have a game of football with them instead.

39. Whitebark Pine Tree - Andy and Kip embark on another wild adventure to North America in search of the animals that live among Whitebark pine trees. After seeing a squirrel and catching a glimpse of a bear, Andy flies with a bird called the Clark's nutcracker, watching as it picks a pine nut and then busily buries it in readiness for the winter. Amazingly, the Clark's nutcracker can bury thousands of pine nuts in this way and remember where they all are.

 

Mission Employable (16 eps) CITV (DVD)

Code: TD4659

Type: Audio Visual

Key Stage: 2

Description

Episode length - 5 minutes

The Mission Employable Agency goes behind the scenes at some of the most important jobs out there.

1 - Train Driver

2 - Farmer

3 - Circus

4 - Chef

5 - Gardener

6 - Chocolatier

7 - Archaeologist

8 - Pilot

9 - Falconer

10 - Artist

11 - Marine Biologist

12 - Ice-Cream Maker

13 - Mechanic

14 - Teacher

15 - Ice Sculptor

16 - News Photographer

 

 

Oak Tree - Nature's Greatest Survivor (1 ep) BBC 4 (DVD)

Code: TD4714

Type: Audio Visual

Key Stages: 2 - 4

Description

Duration - 90 mins

George McGavin investigates the dramatic life of the oak tree - a species that makes extraordinary transformations as it meets the challenges of the four seasons.

In autumn, George goes underground, digging below a tree to see how its roots extract precious resource form the soil. He sees why the oak's super-strong wood made it the perfect material for building some of the most famous ships in naval history, including Nelson's flagship, HMS Victory.

There is a look at the sophisticated strategies the tree uses to survive gales and bitter frosts throughout winter. George finds out about the oak's vital role in architecture, revealing how some very familiar sights such as the tower of Salisbury Cathedral are in fact giant oak structures.

In spring, the tree must procreate and also protect itself from being devoured, while in summer, it is home to hundreds of species, as can be seen through a high-powered microscope.

We make every effort to ensure resources are appropriate for school use, however please watch prior to use to ensure suitability for your class.