Math Investigations

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Chapter 7

Part 1: Home and School Investigation

Send the Letter to Family (PDF file) home with each child. Once each child has brought in a section of a newspaper or magazine with a number in it, have the children group the selections by number, putting all the 6's together, 7's together, and so on. Create a Number Bulletin Board out of the selections.

Part 2: Be an Investigator

A good time to do this investigation is after Lesson 5 on the number 10.


  • Student worksheet for each student
  • crayons

Introducing the Investigation

Introduce the investigation by telling children they are going to keep track of the weather every day for 10 school days. Show children the Investigator Worksheet (PDF file) with the graph on it. Ask, What do you think the pictures on the graph stand for? (sunny day, cloudy day, rainy day) Tell children that each day they will color in a rectangle on the graph to show what kind of day it is.

Doing the Investigation

Set aside time each day to notice the weather and give children a chance to color in their graph. Do this for 10 straight school days. At the end of the ten days ask the following questions:

  • How many sunny days did we have? (Answers will vary.)
  • How many cloudy days did we have? (Answers will vary.)
  • How many rainy days did we have? (Answers will vary.)

Write the number on the board for each question.

Houghton Mifflin Math Grade K