Math Program
Investigations 3

• Understand and extend the counting sequence
• Be fluent with facts to 20
• Understand, represent, and solve problems involving addition and subtraction
• Understand place value

• Does order matter when adding or subtracting numbers?
• What strategies can you use to find the difference between two quantities?

Instructional Snapshot

Students will:

• Play Guess My Number, focusing on place value and comparing quantities
• Explore tools: money, clocks, fact cards and the 100 chart
• Solve addition and subtraction story problems using manipulatives and tools; share strategies

• Describe, identify, and compare attributes of 2-D and 3-D shapes
• Visualize the structure of arrays
• Be fluent with facts to 20
• Understand equal parts of a whole

• How can you use geometry vocabulary to describe 2-D and 3-D shapes?
• What are the properties of a polygon?
• Can halves look different?

Instructional Snapshot

• Draw, sort and describe 2-D and 3-D shapes
• Compare attributes of polygons
• Investigate how many different rectangles can be made from a given number of tiles
• Fold a square or rectangular piece of paper to make halves, thirds and fourths

• Understand place value
• Understand, represent, and solve problems involving addition and subtraction
• Be fluent with facts to 20
• Understand and extend the counting sequence

• How many more do you need to get to 100?
• What strategies can you use to solve problems with the unknown in different parts of the equation?

Instructional Snapshot

• Explore Sticker Stations with strips of ten stickers and singles
• Play place value games with number cubes, 200 charts, connecting cubes, and number cards
• Use an open number line to solve addition and subtraction problems

• Sort and classify
• Collect and represent data
• Describe and interpret data

• How can you use a bar graph, a Venn diagram and a line plot to represent data?
• What can we learn about a topic when we collect data?

Instructional Snapshot

• Play Guess My Rule with images
• Collect and analyze data about the students in our class
• Create bar graphs to represent multiple categories

• Be fluent with facts to 20
• Understand, represent and solve problems involving addition and subtraction
• Understand place value
• Use knowledge of place value to add and subtract 
• Understand and extend the counting sequence

• How can you make my strategy for solving addition and subtraction problems efficient?
• How can you use what you know about hundreds, tens and ones to solve addition and subtraction problems?
• How can you represent my solution strategy?

Instructional Snapshot

• Play games Capture 5, Make a Dollar and Close to 100
• Consider the composition of three digit numbers as hundreds, tens and ones
• Explore place value concepts in the 1,000 Book
• Represent three digit numbers with visual models
• Use addition or subtraction to compare two numbers and find the difference

• Use linear units
• Collect and represent data
• Understand, represent and solve problems involving addition and subtraction
• Measure with standard units

• Why might students get different results when measuring the same object?
• Why does it take more of a smaller unit or fewer of a larger unit to measure the same object? 

Instructional Snapshot

• Measure three different types of jumps with nonstandard units and graph the data
• Build a measuring tool with standard units
• Compare measurements of objects in the classroom 
• Use a yardstick to measure the classroom
• Go on a scavenger hunt for things that are one meter long and one centimeter long

• Investigate odd and even numbers
• Visualize equal groups in the structure of arrays
• Describe and represent equal groups as the foundation of multiplication

• How can you convince someone that every number that makes two equal teams, also makes partners?
• How can you show or explain what each number in a data table represents?

Instructional Snapshot

• Organize cubes and develop a definition for even and odd
• Build cube buildings with equal groups of different sizes
• Represent the total amount of equal groups with addition equations and in a table
• Look for patterns when covering a pattern block shape with a mystery shape

• Understand, represent and solve problems involving addition and subtraction
• Use knowledge of place value to add and subtract 
• Be fluent with facts to 20
• Understand time

• What is a strategy you can use to solve this story problem?
• How can you write equations that accurately represent multiple situations?
• What time will it be in …?
• How can you represent the tens and ones when regrouping to find a solution?

Instructional Snapshot

• Play Spend $1.00 by making trades, and Get to 0 by subtracting multiples of 5
• Continue sorting fact cards into Facts I Know and Facts I Am Still Working On
• Answer elapsed time questions by moving the hands of a clock
• Solve story problems about comparing using tools