Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Session 10, Grades K-2, Part C:
More Problems That Illustrate Algebraic Thinking

In This Part: Strips and Balancing Blocks | Shape Machines | Number Machines
Mystery Machines | Two-Steppers

For each K-2 problem, find a mathematical solution, then answer questions (a)-(f) listed below. If it is helpful, print this page and refer to the questions as you work on each problem.

 a. What algebraic content is in the problems? b. What content does it prepare students for later? c. How does this content relate to the mathematical ideas in this course? d. How would your students approach this problem? e. What are other questions that might extend students' thinking about the problem? f. Does your current program in mathematics at your school include problems of this type?

Problem C3

 Notice the pattern in these two machines: These machines below work in the same way. What goes into the machines? What comes out of them? Describe what each machine does.

 Problem C4 Notice the pattern in these two machines: These machines below work in the same way. What goes into the machines? What comes out of them? Describe what each machine does.

 Problems adapted from Groundworks: Algebraic Thinking, Grade 1 and Grade 2, by Carole Greenes and Carol Findell (New York: Creative Publications, Wright Group/McGraw-Hill, 1998). The above materials may not be reproduced without the written permission of Wright Group/McGraw-Hill.
 Session 10, Grades K-2: Index | Notes | Solutions | Video