One of the trickier concepts for fourth graders is adding and subtracting with negative numbers. Here Julia P. and Jasmine L. use two colored chips to help visualize the problems. For instance, to solve 8 + (-7) students put out 8 red (+) sided chips and 7 yellow (-) chips. They then take away 7 pairs of red and yellow chips (each representing zero) leaving one red chip which is the answer (+1). Confused? Ask a fourth grader to explain.
No comments:
Post a Comment