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NAME ______________________________ DATE _______________
ACTIVITY
Mystery Boxes
Choose a Mystery Box. Count the objects inside.
I counted the things in 
. Here is what I found.
I counted _______________ things in the Mystery Box.
Table of Contents
Investigations 3 in Number, Data, and Space®, Student Activity Book
Unit 1 Building Numbers and Solving Story Problems
Unit 2 Comparing and Combining Shapes
Investigation 1
Investigation 2
Unit 3 How Many of Each? How Many in All?
- Pattern-Block Fill-In, Outline A
- Pattern-Block Counts A
- Story Problems 1
- About the Mathematics in This Unit
- Pattern-Block Fill-In, Outline B
- Pattern-Block Fill-In, Outline C
- Pattern-Block Fill-In, Outline D
- Pattern-Block Fill-In, Outline E
- Pattern-Block Counts B
- Pattern-Block Counts C
- Pattern-Block Counts D
- How Many Squares?
- Finding the Total
- Looking for Rectangles
- Ways to Make Pattern-Block Shapes
- Story Problems 2
- Different Ways to Fill, Outline A
- Different Ways to Fill, Outline B
- Shapes Inside of Shapes
- Filling with More and Fewer: Outline A
- Filling with More and Fewer: Outline B
- Filling with More and Fewer: Outline C
- Build It: Write an Equation
- Roll and Record: Subtraction
- Quick Images
Investigation 1
Investigation 2
Investigation 3
Investigation 4
Unit 4 Fish Lengths and Fraction Rugs
- 7 Peas and Carrots: How Many of Each?
- Finding the Total 2
- Build It: Write an Equation 3
- Build It: Write an Equation 4
- What's in the Bag?
- 9 Peas and Carrots: How Many of Each?
- How Many Are Under the Cup?
- 5 Balloons: Red and Blue
- 8 Fruits: How Many of Each?
- How Many Are Under the Cup? 2
- 10 Fruits: How Many of Each?
- 6 Balloons: Yellow and Green
- 8 Toys: How Many of Each?
- Fill in the Dots
Investigation 1
Investigation 2
Unit 5 Number Games and Crayon Problems
- Longer or Shorter?
- True or False?
- About the Mathematics in This Unit
- Longer or Shorter? 2
- Longer or Shorter? 2
- How Many Cubes Long?
- Measuring with Cubes
- How Long Is It?
- Measuring with Paper Clips
- Related Activities to Try at Home
- Measuring Keepers: Perch
- Measuring Keepers: Mackerel
- Measuring Keepers: Alewife
- What Time Is It?
- Fish Stories
- True or False? 2
- What Time Is It?
- More Fish Stories
- How Much Shorter?
- How Much Longer?
- Half-and-Half Pizzas
- Half-and-Half Circles
- Half-and-Half Square Rugs
- Half-and-Half Squares
- Half-and-Half Rectangle Rugs
- Half-and-Half Rectangles
- Fraction Rugs: Circles
- Fraction Rugs: Rectangles
- Fraction Rugs: Squares
- How Much Longer? How Much Shorter?
- Fourths
- How Much Longer? How Much Shorter? 2
- Identifying Halves and Fourths
Investigation 1
Investigation 2
Investigation 3
Unit 6 Would You Rather Be an Eagle or a Whale?
- Ten Crayons in All
- Twelve Crayons in All: How Many of Each?
- About the Mathematics in This Unit
- Telling Time to the Half Hour
- Give Me 10!
- Make 10 Recording Sheet
- What Is Missing?
- Crayon Puzzles
- A Crayon Puzzle about 10
- Make 10 at Home
- More Crayon Puzzles
- More Crayon Puzzles about 10
- Even More Crayon Puzzles
- One More Crayon Puzzle about 10
- Match to Make 10
- Counters in a Cup at Home
- True or False?
- True or False?
- Penny Jar Problems
- Rosa's Penny Jar
- Can You Make This Equation True?
- Sam's Penny Jar
- True or False?
- More True or False
- Story Problems about Unknown Change
- Can You Make This Equation True? 2
- Kim's Stickers
- Can You Make This Equation True? 3
- Frogs!
- Penny Jar Problems
- Story Problems 4
Investigation 1
Investigation 2
Unit 7 How Many Tens? How Many Ones?
- Gloves or Mittens?
- About the Mathematics in This Unit
- Would You Rather…?
- Do You Have a Pet at Home?
- Do You Like Broccoli or Carrots?
- Our Plan for Collecting Data
- Attendance Data
- What We Found Out
- Walk or Ride?
- Half Hours
- Related Activities to Try at Home
- Music or Gym?
- Crayons or Markers?
- Apple Picking
- Slide or Swings?
- Strawberries or Watermelon?
- Throwing Snowballs
- More Comparison Problems: Kickball or Tag?
- More Comparison Problems: Green or Yellow?
- Shark or Lion?
- Penguin or Duck?
Investigation 1
Investigation 2
Investigation 3
Unit 8 Blocks and Buildings
- How Many Hands?
- Pairs of Things
- Hands at Home
- About the Mathematics in This Unit
- How Many Fingers?
- How Many Eyes?
- How Many Toes?
- How Many Fingers? How Many People?
- How Many Cubes? How Many Towers of 10?
- How Many Dots?
- How Many Cubes? How Many Towers of 10? 2
- Subtracting Towers of 10
- How Many Fingers? How Many People? 2
- How Many Now?
- Subtracting Ten Frame Cards
- How Many Fingers? 2
Investigation 1
- A 3-D Shape Hunt
- 3-D Shape Riddles
- About the Mathematics in This Unit
- Telling Time to the Half Hour
- Can You Draw It?
- Telling Time to the Half Hour 2
- Related Activities to Try at Home
- Telling Time
- Looking for Cubes and Prisms
- Adding Tens with Cubes
- Find That Shape and More Footprints
- Comparing Cones and Cylinders
- Halves and Fourths
- Castle Shapes