Mathematics 8 Percent, ratio and rate
Specific Curriculum Outcomes
N03 Students will be expected to demonstrate an understanding of and solve problems involving percents greater than or equal to 0%.
N04 Students will be expected to demonstrate an understanding of ratio and rate.
N05 Students will be expected to solve problems that involve rates, ratios, and proportional reasoning.
*** Note that Section 5.4 in the student text (Sales Tax and Discount) is omitted. Additional sections 5.8A (Proportional and NonProportional Situations) and 5.8B (Solving Problems that Involve Proportional Reasoning) are located in the Nova Scotia Curriculum Companion.
N03 Students will be expected to demonstrate an understanding of and solve problems involving percents greater than or equal to 0%.
N04 Students will be expected to demonstrate an understanding of ratio and rate.
N05 Students will be expected to solve problems that involve rates, ratios, and proportional reasoning.
*** Note that Section 5.4 in the student text (Sales Tax and Discount) is omitted. Additional sections 5.8A (Proportional and NonProportional Situations) and 5.8B (Solving Problems that Involve Proportional Reasoning) are located in the Nova Scotia Curriculum Companion.
N03 activities
 How Many Times Will A Case of Paper Jam? from Robert Kaplinsky  A company makes copy paper that it claims to be “99.99% jam free." How many paper jams would you expect to have happen in one ream?

N04 Activities
 A Proportion Question from @mikeandallie: What proportion of the divisors of 840 are prime? You could also ask, find the divisors of 840. What is the ratio of prime divisors to composite divisors of a number?
N05 Activities

 Understanding Rational Numbers and Proportions from NCTM Illuminations  In this lesson, students use realworld models to develop an understanding of fractions, decimals, unit rates, proportions, and problem solving. The three activities in this investigation center on situations involving rational numbers and proportions that students encounter at a bakery.
 Using the Internet to Create Proportion Problems from Jon Orr  Let student create their own problem about proportion and rates using The Internet in RealTime website. Here was my example of a proportion problem: “If there are 48818 apps downloaded in a minute from Apple, how many in one day?”
 How Fast is Usain Bolt Running?  Stop the video after 100m, 200m and let students guess and then revise their guess for how long it will take him to finish. See how close they are. They can then calculate speed.
