A ratio is a comparison of two quantities. Place 2 yellow counters and 3 red counters on the workspace. The ratio of yellow to red counters can be written using words (2 to 3), using a colon (2:3), or a fraction (2/3). Double the number of yellow and red counters to make the ratio 4:6. A proportion is an equation stating that two ratios are equivalent. The ratios 2:3 and 4:6 form a proportion because their ratios are equivalent.
Ratios and Proportions using the Brainingcamp Two-Color Counters virtual manipulative.
Brainingcamp virtual manipulatives can be used anywhere with no setup, cleanup, or lost parts. They are highly effective at engaging today’s digital learners and helping them bringing abstract math concepts to life.
Brainingcamp produces virtual manipulatives for iPads, Chromebooks, PCs, and Macs.