Happy Wednesday!
This morning in Math we started learning about ratios (les rapports). Ratios are a comparison of quantities. We use ratios almost every day, especially in the kitchen! We see ratios when we mix frozen orange juice, cook rice and bake a cake! Specific ratios ensure of juice won't be watered down, our rice won't be too mushy and
our cake won't be dry!
And, because there's no better way to kick off a new Math concept than with a sugary cereal treat, we opened up a box of Froot Loops to practice our ratio writing skills!
We each got 20 Froot Loops and had to answer specific questions comparing one colour of "Loop" to another. Mme Careen tried to trick us by asking us to write a ratio of how many BLUE Froot Loops we had.
Silly Mme! There is no such thing as blue Froot Loops! :)
After we wrote out all of our ratios, we were challenged to find the percentage of each colour represented in our group of 20 Froot Loops. Because percents are fractions over 100 (and not over 20 like the fractions we had written), we had a bit of Math thinking to do!
Ex: Mme Careen had 4 yellow Froot Loops. What percentage of Froot Loops are yellow?
The ratio of yellow Froot Loops to ALL of the Froot Loops is 4 : 20.
In order to find the percentage of yellow Froot Loops, we need to find an equivalent ratio (fraction) over 100.
4 : 20 = 20 : 100.
(We found the equivalent ratio by multiplying by 5).
This means that 20% of the Froot Loops are yellow!
In addition to learning about ratios, this activity was also getting us ready to review and tackle fractions and equivalent fractions next week! Who knew there was so much Math hiding in a box of Froot Loops?!
Have a great afternoon! :)
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These two videos can help!
Math Antics Percent Video
(We've seen this video before, but it's a great review!)
Math Antics Percent and Equivalent Fractions
(We'll be watching this video in class early next week, but watching it ahead of time certainly won't hurt!)
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