Curriculum Guides

Grade Level: Third

Content Area: Operations/Computations

Skills: Addition with regrouping to 1,000-

Prerequisites: Add without regrouping-

Instructional Practices: Reasoning and Connections to Real World

Materials Needed:

Trading board for each child (see Teacher Made Materials Section for making of trading board), ½" colored chips (red, yellow, blue, pink) for each child, overhead projector, and transparency of trading board-

Technology: Modeling Operations

Mental Math

Counters and Equations

Math Practice Level I, II, III

Speedway Math - MECC

Activity:

Teacher demonstrates on overhead as students do activity on their own individual trading board. Instructions: We are going to add two numbers using colored chips. In the top horizontal section of the trading board use colored chips to build this number (write number on overhead) Remember to place colored chips under corresponding section on board. Build this number on the second horizontal section of the trading board. To see how many chips we have altogether, pull down all chips in the red section below the double line. If more than 9, then we must trade 10 chips for one yellow chip and place that yellow chip in the next vertical column. Next, pull down all the yellow chips below the double line. Count them. If have more than 9, then we must trade 10 for a blue. Continue this process until all chips have been brought below the double line. Record answer and clear the board for the next problem.

Theme Idea: Can be introduced during first six weeks of school and continue all year.