Challenge Masters
Unit 1
- Unit 1-1 Same Number
- Unit 1-2 Number Maze
- Unit 1-3 Left and Right
- Unit 1-4 Hat Trick
- Unit 1-5 In the Dog House
- Unit 1-6 At the Playground
- Unit 1-7 Partners of a Number
- Unit 1-8 One and Two
- Unit 1-9 More Position Words
- Unit 1-10 Alike and Different
- Unit 1-11 From the Garden
- Unit 1-12 Alike and Different
- Unit 1-13 Three
- Unit 1-14 Make More
- Unit 1-15 Fewer
- Unit 1-16 Square and Circle
- Unit 1-17 Four
- Unit 1-18 Same Number
- Unit 1-19 Five
- Unit 1-20 Connect the Dots
- Unit 1-21 Write 1–5
- Unit 1-22 Color Partners for Five
- Unit 1-23 Match One to One
- Unit 1-24 Circle, Rectangle, and Triangle
Unit 2
- Unit 2-1 School Days
- Unit 2-2 Domino Match
- Unit 2-3 Problem Solving Strategy: Use Logical Reasoning
- Unit 2-4 Let's Go Shopping
- Unit 2-5 Six
- Unit 2-6 Patterns With Sounds and Motions
- Unit 2-7 Problem Solving Strategy: Draw a Pattern
- Unit 2-8 Draw and Play Today
- Unit 2-9 Penny
- Unit 2-10 Seven
- Unit 2-11 Equal or Not Equal
- Unit 2-12 Find and Color
- Unit 2-13 Six, Seven, and Eight
- Unit 2-14 Solid Shapes
- Unit 2-15 Repeat It
- Unit 2-16 Nine
- Unit 2-17 Inside, Outside
- Unit 2-18 Pencil It In
- Unit 2-19 Add 1 to Numbers 0–9
- Unit 2-20 At the Lake
- Unit 2-21 In the Park
- Unit 2-22 Boxes and Rectangles
- Unit 2-23 Problem Solving Strategy: Use a Pattern
- Unit 2-24 Where Do I Belong?
Unit 3
- Unit 3-1 Model Addition
- Unit 3-2 Groups of 10
- Unit 3-3 Switch the Partners
- Unit 3-4 Extend Patterns
- Unit 3-5 Nine, Ten, and Eleven
- Unit 3-6 Dimes and Pennies
- Unit 3-7 Finding 5-Groups
- Unit 3-8 Compare Weight
- Unit 3-9 Identify Solid Shapes
- Unit 3-10 Sort by Size
- Unit 3-11 Draw 5-Groups
- Unit 3-12 Before, After, Between
- Unit 3-13 Compare Capacity
- Unit 3-14 Shape Patterns
- Unit 3-15 Match Teen Totals
- Unit 3-16 More
- Unit 3-17 How Many Caps?
- Unit 3-18 Build Solid Shapes
- Unit 3-19 Decision Time
- Unit 3-20 Ordinal Numbers
- Unit 3-21 Fewer
- Unit 3-22 Teen Totals
- Unit 3-23 Teen Numbers
- Unit 3-24 Make Patterns
Unit 4
- Unit 4-1 Apple Picking
- Unit 4-2 Ten
- Unit 4-3 What Do You See?
- Unit 4-4 More Fruit, Please!
- Unit 4-5 Numbers 11–20
- Unit 4-6 Twice as Nice
- Unit 4-7 More or Fewer
- Unit 4-8 Matching Sets and Numbers
- Unit 4-9 Combine Plane Shapes
- Unit 4-10 What's Missing?
- Unit 4-11 Order Numbers
- Unit 4-12 Match the Clues
- Unit 4-13 What Comes Next?
- Unit 4-14 A Total of 10
- Unit 4-15 Blast Off!
- Unit 4-16 What's Missing?
- Unit 4-17 Some More Please
- Unit 4-18 Build the Castle
- Unit 4-19 Seen at the Parade
- Unit 4-20 Graph the Dots
- Unit 4-21 Find Three Partners
- Unit 4-22 Make a Graph
- Unit 4-23 How Much?
- Unit 4-24 Travel Fun
Unit 5
- Unit 5-1 Busy Bees
- Unit 5-2 Estimating
- Unit 5-3 To a Tee
- Unit 5-4 Show a Story Problem
- Unit 5-5 Colorful Partners
- Unit 5-6 Patterns With Shapes and Positions
- Unit 5-7 Party Time
- Unit 5-8 Make 6!
Unit 6
- Unit 6-1 Problem Solving Strategy: Act It Out
- Unit 6-2 Sort and Graph Coins
- Unit 6-3 Times of Day
- Unit 6-4 Time to the Hour
- Unit 6-5 More Time, Less Time
- Unit 6-6 Compare Digital and Analog Clocks
- Unit 6-7 Tools for Measuring
- Unit 6-8 What's Our Length?
- Unit 6-9 Order by Length
- Unit 6-10 Name the Number
- Unit 6-11 The Night Sky