Twelve rounds include practice or review simplifying exponential expressions with negative exponents by rewriting them into expressions with positive exponents. The activity also includes expressions when the exponent is zero.
Students work with a partner while seated at their desks. They should write in their own notebook or on the blank Answer Sheet (included).
At the same time the first pair of students is working on Problem 1, the second pair works on Problem 2, the third pair works on Problem 3, etc. At the teacher’s signal, all students pass their problem in a specific direction. The students who started with Problem 2 should now pass it to the students who started with Problem 1, the students who started with Problem 3 pass it to the students who started with Problem 2, etc. The first pair of students starting with Problem 1 should deliver their finished problem to the last pair of students, or the teacher may prefer to deliver these each time. Students now flip over their new page to find the ANSWER to the problem they just finished.
Students continue to work problems in order, pass problems and check their answers on the back of the next problem page until they have completed all problems included in the activity.
This activity works well in the middle of a lesson while students are actively practicing a new skill or can be used as a review.
The answer key is built into the activity so students check for accuracy themselves.
Print single-sided copies and slide pages into plastic page protectors to keep problems and answers together. Put Problem 1 and ANSWER Problem 12 back-to-back in the same plastic page protector; put Problem 2 and ANSWER Problem 1 back-to-back in another plastic page protector, Problem 3 and ANSWER Problem 2 together, etc. Prepare 2 or more complete sets of the activity to have enough pages for each pair of students in the class. Keep complete sets in order.
It is very important to hand out problems in numerical order so the page with the answer on the back follows its problem number. As you hand out problems in order, problem side up, tell each pair of students the direction they should pass their problem when finished. This direction may vary by row if you zig-zag or “snake” up and down the rows of desks. The first pair of students starting with Problem 1 should deliver their finished problems to the last pair of students, or you may prefer to deliver these each time.
CCSS: Expressions and Equations Work with radicals and integer exponents: 8.EE.A.1
CCSS: Interpret the structure of expressions: HSA.SSE.A.2
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