Math Investigations

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Chapter 6

Part 1: For the problem in the Teacher's Edition, page 144

Students can practice their research skills by finding costs of items from store catalogues, or you can provide them with the data sheet that shows the cost of some items from catalogues found in the Activity page (PDF file).

This activity is a good introduction to the investigation that follows it.

Answers will vary depending upon what items the students choose.

Part 2: Be an Investigator

A good time to do this investigation is after Lesson 6 on multiplying three-digit numbers by one-digit numbers.

Introducing the Investigation

Introduce the investigation by reading aloud the assignment at the top of the first page of the Description of Investigation and Student Report (PDF file), by having one of your students read aloud the assignment, or by having the students read the assignment individually.

Put students in groups of two to four to work on the investigation.

Doing the Investigation

Have the students share what they ordered and how they stayed within the budget of $2,000.

Student Report

The student report sheet gives students an opportunity to show what they have done.

Extending the Investigation

Have the students order items for another kind of store and give them a different budget to work with.


Houghton Mifflin Math Grade 4