Name: ______________________________ Date: _________________________ Percents – Using Unit Square Problem‐solving Assignment Answer both questions below. Show all steps of your problem‐solving. Rubric for evaluation is on the back. 1. Thirty‐five percent of the 200 students in Grades 8 and 9 have blue eyes. How many students in Grades 8 and 9 have blue eyes? Use the unit square with appropriate labels to represent this situation (1 mark). Solve (4 marks – see rubric). 2. The music store is having a promo sale of 20% discount on all music CDs. Marcia bought a CD with a discount of $2.60. What was the original price of the CD that Marcia purchased? Use the unit square with the appropriate labels to represent this situation (1 mark). Solve (4 marks – see rubric).
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Problem‐solving Rubric Your attempts to solve the problem (all your work), your solution, and a written explanation of how you figured out the problem should always be included. The rubric (marking guide and expectations) for the problem is as follows: Mastery / Expert (terrific!) • Of course my answer is correct • You can tell I understood what I was doing and how to go about solving the problem • You can see what I was thinking because I have shown all my work (equations, graphs, tables, charts, drawings, etc.) and have used appropriate operations to solve the problem • I explained what I did very clearly by using complete sentences, AND numbers Capable / Practitioner (Got it, good work!) • My answer may or may not be correct but I showed I understood most of the problem and how to solve it • I showed most of my thinking and work with equations, graphs, tables, charts, drawings, etc. • My written explanation was understandable Developing / Apprentice (Getting there, good effort!) • My answer is not correct but I showed that I understood some of the problem and how to solve it • I showed very little of my thinking and work • My explanation was unclear and / or incomplete Not Demonstrated / Novice (Get help) • I didn’t have the correct answer and I couldn’t explain what I was thinking very clearly • I only understood a little of the problem and how to solve it • I couldn’t organize my thoughts and / or I didn’t finish solving the problem or showing all my work