Math Investigations

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Chapter 4

Part 1: Home and School Investigation

Send the Letter to Family (PDF file) home with each child. As you study each number throughout this chapter and the chapters to come, ask, Who thinks they have three (or two or four, five, and so on) people in their family? Choose one of the envelopes of one of the children that raised their hand. Open the envelope up and show the objects to the class, saying something like, This envelope shows how many people are in Mio's family. Each paper clip represents one person. Let us count and see how many people there are. If there are 3 people in Mio's family, say, This is a good example of the number 3. If there are fewer than three people in Mio's family, ask, How many people are in Mio's family? If there are more than three people in Mio's family, say, We will learn about this number soon.

At the end of the chapter, open any envelopes that have not been opened. Count the number of people in the family. For families of more than five, save the envelopes to use in chapters 7 and 8.

Part 2: Be an Investigator

We recommend that you begin this investigation with Lesson 1, which teaches the numbers 1 and 2, and end it with Lesson 4, which the teaches the number 5.

Materials

Introducing the Investigation

Introduce the investigation by showing children a picture of the Investigator Worksheet with the bear on it. Tell the children that they are going to color in the worksheet as they do the lessons in this chapter where they learn the first five counting numbers.

Doing the Investigation

Give the Investigator Worksheet to each child at the end of Lesson 1. Tell children they are going to color something in the picture that shows the number 1. Give them some clues, such as the following, to help them figure out that they are going to color in the mouth.

  • The bear has just one of these.
  • The bear uses this to eat.

Give the children time to color in the mouth.

Then tell the children they are going to color something in the picture that shows the number 2. Give them some clues, such as the following, to help them figure out that they are going to color in the eyes.

  • The bear has two of these.
  • The bear uses these to see.

Do the number 3 for Lesson 2, the number 4 for Lesson 3, and the number 5 for Lesson 4. Use the following clues.

Lesson 2 (the number 3)

  • There are three of these on the bear's shirt.
  • The bear uses these to close his shirt.

Lesson 3 (the number 4)

  • There are four of these on the bear's hat.

Lesson 4 (the number 5)

  • The bear is holding five of these.

You might want to make a book of the bear pictures or display them in the classroom.


Houghton Mifflin Math Grade K