Using Ratios to Taste the Rainbow University （使用比率品尝彩虹大学）.pdf

Using Ratios to Taste the Rainbow Lesson Plan Cube Fellow: Amber DeMore Teacher Mentor: Kelly Griggs Goal: At the end of the activity, the students will know that the actual ratio of colored skittles is not what the Mars company claims. They will also be able to calculate different ratios and percentages associated with the number of colored skittles given to their group. th Grade and Course: Math 7 grade KY Standards: MA-7-NPO-S-RP1 Students will compute percentages and use percentages in proportional reasoning. MA-7-NPO-S-RP2 Students will determine and solve proportions in real-world and mathematical situations. MA-7-NPO-S-RP3 Students will develop proportional reasoning and apply to real-world and mathematical problems (e.g., rates, scaling, similarity). MA-07-1.4.1 Students will apply ratios and proportional reasoning to solve real-world problems (e.g., percents, sales tax, discounts, rate). MA-7-NPO-U-4 Students will understand that proportional reasoning is a tool for modeling and solving problems encountered in everyday situations. MA-7-DAP-S-CD1 Students will make predictions, draw conclusions and verify results from statistical data and probability experiments. Objectives: Resources/materials needed: 15 bags of 25 skittles (1 for each pair), worksheets, smartboard/whiteboard Description of Plan: First have the students do the following bell ringer: Write out a step by step method for changing the fraction 1/8 to a percent. Write it so that a fourth grader could repeat your steps and get the same answer. Then go over the two different methods for finding a percent using student participation. Second, hand out the worksheet to each pair of students. For my students, I made sure to stress that we would stop doing the activity if anyone was off task or playing with the Ski