Basic Classes of Linear Operators

Kick up the fallen leaves and uncover the secrets of autumn in this seasonal lift-the-flap non-fiction book. Filled with bite-sized nature facts and over 40 flaps to lift, young explorers can enjoy a colourful and interactive introduction to the wonders of autumn. Reveal hidden wonders, learn more about the world around you and how it changes with each season.

Share a hug and a kiss with your baby with this large touch-and-feel playbook!This sturdy board book is full of touch-and-feel patches to explore and ends with a peekaboo mirror finale, to engage your baby. With bright colours and adorable pictures this is the perfect first book for babies to encourage their sensory development. Illustrated by Lemon Ribbon StudioFrom tummy time to bath time, the bestselling Baby Touch series contains the perfect first books to support key milestones.Also available:I Love YouFarm AnimalsPeekabooPlaybookRescue VehiclesHide and SeekRainbowAnimalsVehiclesFairy TalesNursery RhymesSeasonsTummy TimeGet DressedBusy Day

Ladybird Do You Know? is a STEM-based ELT graded reading series recommended for children aged 5+ who are learning English as a foreign or second language.These levelled non-fiction books feature video content, project work and critical-thinking activities. Each book asks a range of BIG questions on STEM topics from nocturnal animals to building bridges, developing children's language, communication and investigation skills.The four levels progress from CEFR Pre-A1 to A2.Visit the Ladybird Education website for online video content, audio, comprehension activities, and suggestions for project work.Planets, a Level 1 Reader, is Pre-A1 in the CEFR framework and supports YLE Starters exams. Short sentences contain a maximum of two clauses, using the present tense and some simple adjectives.What is a planet? What do we know about Mars? What are Saturn's rings made of? Find out more about the planets of our solar system.

Introduce your baby to all kinds of toys with this gorgeous black-and-white book!Designed to develop babies' eyesight from birth, this high-contrast book with clearly-defined images and simple text will engage your child's senses as they discover all their favourite toys. Spot the stacking rings, stripy ball and cuddly teddy bear - and look out for the surprise touch-and-feel on the final page!This black-and-white book:Stimulates visionEncourages sensory developmentRecommended for children aged 0+Illustrated by Lemon Ribbon StudioAlso available:Baby Touch: Faces: a black-and-white bookBaby Touch: Animals: a black-and-white bookBaby Touch: Vehicles: a black-and-white book Baby Touch: My First Book: a black-and-white cloth bookBaby Touch: A black-and-white buggy book

Who can you spot hiding behind each flap? Play peekaboo with your baby and help them lift the flaps to spot the different animals. This bright board book is full of textured patches to touch, feel and explore, with a mirror finale!This is the perfect first book for sharing together with your baby or toddler. The touch-and-feel patches, large flaps and high-contrast colours encourage interaction and stimulate a baby's senses.Illustrated by Lemon Ribbon StudioThis touch-and-feel playbook:Encourages sensory developmentBoosts motor skillsRecommended for children aged 0+From tummy time to bath time, the bestselling Baby Touch series contains the perfect first books to support key milestones. Also available:Baby Touch: PlaybookBaby Touch: PeekabooBaby Touch: VehiclesBaby Touch: AnimalsBaby Touch: Tummy TimeBaby Touch: Night-NightBaby Touch: Busy DayBaby Touch: Get DressedBaby Touch: SeasonsBaby Touch: FoodBaby Touch: ABCBaby Touch: 123Baby Touch: Fairy TalesBaby Touch: I Love YouBaby Touch:

The Ladybird Do You Know? graded readers series comprises a range of non-fiction STEM titles for young learners of English. Covering a variety of topics, Do You Know? adopts an enquiry-based approach, and includes motivating video content, project work and critical thinking activities to develop students' linguistic and twenty-first century skills.Recommended for children aged 7+, there are four levels progressing from CEFR level Pre-A1 to level A2. Each reader is accompanied by online video content, audio, video and comprehension activities, and suggestions for project work.This Level 3 Reader is A1+ in the CEFR framework and supports YLE Movers exams. The longer text is made up of sentences with up to three clauses, some expression of future meaning, comparisons, contractions and relative clauses.9780241355770 Level 3: Animal Senses9780241382868 Level 3: Clever Prey9780241503416 Level 3: Engineering in History9780241382851 Level 3: Mammals9780241382882 Level

Do You Know? is a series of levelled non-fiction books featuring video content, project work and critical-thinking activities to motivate and engage young learners. Covering a range of STEM topics from nocturnal animals to climate change, Do You Know? takes an enquiry-based approach, developing children's language, communication and investigation skills.Recommended for children aged 7+, there are four levels progressing from CEFR level Pre-A1 to level A2. Each reader is accompanied by online video content, audio, video and comprehension activities, and suggestions for project work.This Level 4 Reader is A2 in the CEFR framework and supports YLE Flyers exams. The longer text is made up of sentences with up to three clauses, more complex past and future tense structures, modal verbs and a wider variety of conjunctions.9780241355800 Level 4: Animals Helping Animals9780241382899 Level 4: Changing Weather9780241355794 Level 4: Fast and Slow9780241503430 Level 4: High Spe

Do You Know? is a series of levelled non-fiction books featuring video content, project work and critical-thinking activities to motivate and engage young learners. Covering a range of STEM topics from nocturnal animals to climate change, Do You Know? takes an enquiry-based approach, developing children's language, communication and investigation skills.Recommended for children aged 7+, there are four levels progressing from CEFR level Pre-A1 to level A2. Each reader is accompanied by online video content, audio, video and comprehension activities, and suggestions for project work.This Level 2 Reader is A1 in the CEFR framework and supports YLE Movers exams. Short sentences contain a maximum of two clauses, introducing the past tense and some simple adverbs.9780241382769 Level 2: Animal Homes9780241382875 Level 2: Animals and the Weather9780241355824 Level 2: Animals at Night9780241503393 Level 2: At Sea9780241382813 Level 2: Coral Reefs9780241503409 Level

Do You Know? is a series of levelled non-fiction books featuring video content, project work and critical-thinking activities designed to motivate and engage. Covering a range of STEM topics, Do You Know? takes an enquiry-based approach, developing children's communication and investigation skills.Recommended for children aged 7+, there are four levels progressing from CEFR level Pre-A1 to level A2. Each reader is accompanied by online audio, video and comprehension activities, and suggestions for project work.This Level 1 Reader is Pre-A1 in the CEFR framework and supports YLE Starters exams. Short sentences contain a maximum of two clauses, using the present tense and some simple adjectives.9780241382837 Level 1: Animal Families9780241382783 Level 1: Animal Sounds9780241355831 Level 1: Animals and Their Bodies9780241503379 Level 1: Big Bridges9780241382806 Level 1: Birds and Insects9780241382790 Level 1: Jungles9780241503386 Level 1: Tall Towers

產品介紹How do birds fly? How do jet engines move a plane? Find out more about helicopters, gliders and the science of flying.In the Air, a Level 2 Reader, is A1 in the CEFR framework and supports YLE Movers exams. Short sentences contain a maximum of two clauses, introducing the past tense and some simple adverbs.系列介紹跟著 BBC Earth一起探索動物與大自然的神秘世界▌讀本融入探究式教學概念（ inquiry-based approach ），每一跨頁均透過「主題問句」先引導孩子主動思考，再輔以實例、多元活動增進學習深度與廣度。▌全系列共四級（L1-4），每級九本。每本清楚標示Lexile級數及Word count。▌每本除提供non-fiction文本外，亦有圖解單字、互動式延伸活動（Find Out, Think, Watch, Project, Look）及讀後小考。▌每級數句構與時態運用及詞彙表達皆參考Cambridge YLE題型，讓孩子從閱讀中學習主題知識，同步培養必備語言、溝通力及探究力。

How do we make bridges? Do animals have bridges? Find out more about the science of building bridges, big and small.

Introduce your baby to popular pets with this bright, interactive touch-and-feel book. With simple text, bold illustrations and an exciting touch-and-feel on every double page, this playful book engages your baby's senses as they discover lots of adorable pets. Children will love exploring all the different textures as they tickle the sparkly goldfish, touch the scaly lizard and stroke the fluffy dog!Sensory developmentBoosts motor skillsRecommended for children aged 0+Illustrated by Lemon Ribbon StudioAlso available:Baby Touch: Hello, Daddy!Baby Touch: Hello, Mummy!Baby Touch: Seasons Tab BookBaby Touch: Vehicles Tab Book

The natural home of an animal is known as its habitat and animals have adapted to live and survive in different environments around the world - from the marshlands of England to the outback of Austral

Introduce your baby to all of the seasons with this bright, interactive playbook. Say hello to spring, summer, autumn and winter, from fluffy chicks to sparkly snowflakes!With textured patches to to

Brought to you by Ladybird. A collection of original audio stories, counting down the days to Christmas! These new stories are especially written for the festive period, excellent listening for when y

What is extreme weather? Where are the coldest places? Find out about weather and how it is changing in this BBC Earth reader. The Ladybird Do You Know? graded readers series comprises a range of no

Do You Know? is a series of levelled non-fiction books featuring video content, project work and critical-thinking activities to motivate and engage young learners. Covering a range of STEM topics from nocturnal animals to climate change, Do You Know? takes an enquiry-based approach, developing children's language, communication and investigation skills.9780241382837 Level 1: Animal Families9780241382783 Level 1: Animal Sounds9780241355831 Level 1: Animals and Their Bodies9780241382806 Level 1: Birds and Insects9780241382790 Level 1: Jungles9780241382769 Level 2: Animal Homes9780241382875 Level 2: Animals and the Weather9780241355824 Level 2: Animals at Night9780241382813 Level 2: Coral Reefs9780241355787 Level 2: Underwater Predators9780241355770 Level 3: Animal Senses9780241382868 Level 3: Clever Prey9780241382851 Level 3: Mammals9780241382882 Level 3: Reptiles9780241355817 Level 3: Underwater Forests978024135

How do animals make sounds under the water? Do animals laugh? Find out about the sounds animals make in this BBC Earth reader. The Ladybird Do You Know? graded readers series comprises a range of no

Where do animals live? Do all animals have homes? Find out about animal homes in this BBC Earth reader. The Ladybird Do You Know? graded readers series comprises a range of non-fiction STEM titles f

What is a jungle? Find out about jungle plants and animals in this BBC Earth reader. The Ladybird Do You Know? graded readers series comprises a range of non-fiction STEM titles for young learners o

How many ears do animals have? What can animals do with a tail? Find out about animals and their bodies in this BBC Earth reader. The Ladybird Do You Know? graded readers series comprises a range of non-fiction STEM titles for young learners of English. Covering a variety of topics, Do You Know? adopts an enquiry-based approach, and includes motivating video content, project work and critical thinking activities to develop students' linguistic and twenty-first century skills.Recommended for children aged 7+, there are four levels progressing from CEFR level Pre-A1 to level A2. Each reader is accompanied by online video content, audio, video and comprehension activities, and suggestions for project work. Animals and Their Bodies, a Level 1 Reader, is Pre-A1 in the CEFR framework and supports YLE Starters exams.Short sentences contain a maximum of two clauses, using the present tense and some simple adjectives.

What are mammals? Where do they live? Find out about different mammals on land and in water in this BBC Earth reader. The Ladybird Do You Know? graded readers series comprises a range of non-fiction

What are baby animals called? What is in an egg? Find out about animal families in this BBC Earth reader. The Ladybird Do You Know? graded readers series comprises a range of non-fiction STEM titles

Do all birds fly? What do insects eat? Find out about birds and insects in this BBC Earth reader. The Ladybird Do You Know? graded readers series comprises a range of non-fiction STEM titles for you

What are corals? What lives near a coral reef? Find out about coral reefs and animals that live there in this BBC Earth reader. The Ladybird Do You Know? graded readers series comprises a range of n

Brought to you by Ladybird. A collection of original audio stories for those days when it is too wet for outdoor adventures. Especially written for little dreamers and young explorers who never let

Step 2 contains two stories that build on the initial letter sounds learnt in Step 1 and focus on the sound and letter combinations: s, a, t, p, i, n. Read it yourself with Ladybird is one of Ladybi

Step 3 contains two stories that build on the phonics learnt in previous steps and focus on the sound and letter combinations: m, d, g, o, c, k, ck. Read it yourself with Ladybird is one of Ladybird

Step 10 contains two stories that build on the phonics learnt in previous steps and allow practice of sound and letter combinations that have already been encountered. Read it yourself with Ladybird

Step 1 is an introduction to phonics that focuses on the letter sounds: g, k, e, u, h, l, j, v, w, x, y, z, qu. Read it yourself with Ladybird is one of Ladybird's best-selling reading series. For o

Scuderia Ferrari is one of the great names in motor racing. Find out all about their most famous races and victories. Ladybird Readers is a graded reading series of traditional tales, popular characte

It is washing day for Bear. Masha is dirty-again and again! Bear washes Masha's clothes-again and again. Bear is tired!Ladybird Readers is a graded reading series of traditional tales, popular charact

It is washing day for Bear. Masha is dirty-again and again! Bear washes Masha's clothes-again and again. Bear is tired! Ladybird Readers is a graded reading series of traditional tales, popular charac

Masha wants sweets for breakfast. Bear is not happy. Sweet are not a breakfast food! Masha makes lots of sweets . . . Ladybird Readers is a graded reading series of traditional tales, popular charac

When Arthur pulls the sword from the stone he becomes king. He and his knights must fight battles and protect Camelot. Ladybird Readers is a graded reading series of traditional tales, popular charact

When Mary's parents die she is sent to live with her uncle. Mary hates it there, until she finds a secret garden . .. Ladybird Readers is a graded reading series of traditional tales, popular characte

The emperor is old, and wants to choose a new emperor. He gives seeds to lots of boys. Who will grow a plant and be the new emperor?Ladybird Readers is a graded reading series of traditional tales,

Hare can run and jump. Tortoise can walk. Hare and Tortoise have a race, but can Tortoise win? Hare is fast and he is slow!Ladybird Readers is a graded reading series of traditional tales, popular cha

Powhatan is the Chief of a tribe. Pocahontas is his daughter. They live in a fine village. Then, English men came in big boats. Ladybird Readers is a graded reading series of traditional tales, popu

Masha wants sweets for breakfast. Bear is not happy. Sweet are not a breakfast food! Masha makes lots of sweets .. . Ladybird Readers is a graded reading series of traditional tales, popular character