Challenge Masters
Unit 1
- Unit 1-1 Greatest, Least, and in the Middle
- Unit 1-2 Dotted Numbers
- Unit 1-3 Problem-Solving Strategy: Work Backwards
- Unit 1-4 The Abacus
- Unit 1-5 Palindromes
- Unit 1-6 Crack the Property Code
- Unit 1-7 The Price of Stamps
- Unit 1-8 Missing Digits
- Unit 1-9 Magic Squares
- Unit 1-10 Missing Digits
- Unit 1-11 Race to Zero
- Unit 1-12 Same Difference
- Unit 1-13 Babylonian Number System
- Unit 1-14 Crossnumber Puzzle
- Unit 1-15 A Shopping Spree!
Unit A
- Unit A-1 All Around Triangles and Quadrilaterals
- Unit A-2 Parallel and Perpendicular Letters
- Unit A-3 Tangram
- Unit A-4 Perimeter Patterns
- Unit A-5 Kites
Unit 2
- Unit 2-1 Balancing Act
- Unit 2-2 Function Tables
- Unit 2-3 Equation Riddles
- Unit 2-4 Splish Splash
- Unit 2-5 Puzzled Penguin Problems
- Unit 2-6 Digit Scramble
- Unit 2-7 Problem Solving Strategy: Logical Reasoning
- Unit 2-8 Magic Squares
Unit B
- Unit B-1 Name That Figure!
- Unit B-2 Shaping Up
- Unit B-3 Triangle Puzzle
- Unit B-4 Missing Angle Measures
Unit 3
- Unit 3-1 Round Riddles
- Unit 3-2 What Number Am I?
- Unit 3-3 Which Way?
- Unit 3-4 Check This Out
- Unit 3-5 Coin Combinations
- Unit 3-6 Problem-Solving Application: Make Change
- Unit 3-7 Face a Hundred
- Unit 3-8 Estimated Distances
- Unit 3-9 Logical Reasoning
- Unit 3-10 Problem-Solving Strategy: Make a Table
- Unit 3-11 Letter Survey
- Unit 3-12 Too Much or Too Little Information
- Unit 3-13 Steps Along the Way
- Unit 3-14 Work Backward
- Unit 3-15 Ice Cream Scoop
- Unit 3-16 Use a Bar Graph
Unit C
Unit 4
- Unit 4-1 Secret Message
- Unit 4-2 Model Repeated Groups
- Unit 4-3 States and Stars
- Unit 4-4 Nickel Exchange
- Unit 4-5 Double Dominoes
- Unit 4-6 The Counter
- Unit 4-7 A Riddle with 9 Count-bys
- Unit 4-8 Shapes in Equations
- Unit 4-9 Mayan Multiplication
- Unit 4-10 Petting Zoo Pens
- Unit 4-11 Divide and Conquer
- Unit 4-12 Make an Organized List
- Unit 4-13 Brahmi Numerals
- Unit 4-14 Prime Numbers
- Unit 4-15 Sticky Products
- Unit 4-16 What's the Sign?
Unit D
Unit 5
- Unit 5-1 Chicken Riddle
- Unit 5-2 Problem-Solving Strategy: Draw a Picture
- Unit 5-3 8s Hopscotch
- Unit 5-4 Hooray for Arrays!
- Unit 5-5 Seven Triangles
- Unit 5-6 Coloring Multiples
- Unit 5-7 Logic Problems
- Unit 5-8 Square Dividends
- Unit 5-9 Broken Keys
- Unit 5-10 Choose the Operation
- Unit 5-11 Multi-Step Problems
- Unit 5-12 Multi-Step Problems
- Unit 5-13 Multiplication Table Puzzle
Unit E
Unit 6
- Unit 6-1 Paint the Fence
- Unit 6-2 Fraction Quilt
- Unit 6-3 What Is Missing?
- Unit 6-4 Problem-Solving Strategy: Write an Equation
- Unit 6-5 Multi-Step Problems
- Unit 6-6 Multi-Step Problems
- Unit 6-7 Classy Fractions
- Unit 6-9 Pizza Equality
- Unit 6-10 Equivalent Fractions
- Unit 6-11 Which Fraction Am I?
- Unit 6-12 Four Fractions
- Unit 6-13 Optical Illusions with Fractions
- Unit 6-14 Fraction Symbols
- Unit 6-15 Fraction Scales
- Unit 6-16 Mexican Money
- Unit 6-17 Mixed Number Nails
- Unit 6-18 The Marble Game
- Unit 6-19 Divisibility
- Unit 6-20 Interpret Remainders
Unit F
- Unit F-1 Optical Illusions with Geometry
- Unit F-2 Find the Hidden Cubes
- Unit F-3 Is a Pyramid Always a Pyramid?
- Unit F-4 Analogies
- Unit F-5 Solid Wood Puppet
Unit 7
- Unit 7-1 Body Units
- Unit 7-2 Length Riddle
- Unit 7-3 Length of a Curve
- Unit 7-4 Find, Measure, and Add
- Unit 7-5 Missing Measurements
- Unit 7-6 Capacity Riddle
- Unit 7-7 Rhythmic Gymnastics
- Unit 7-8 Measurement Scavenger Hunt
- Unit 7-9 Balancing Act
- Unit 7-10 Temperatures Around the World