Tremendous Tuesday!
Today we learned about equivalent ratios during math class. Ratios are used for comparisons. They are used to compare two quantities.
Sometimes it is useful to write a ratio in another way. For example, there are 8 cups of strawberries added to a fruit salad for every 16 cups of other fruits. This is an 8:16 ratio of strawberries to other fruits. However, it can also be represented as 1 :2. So if we add one cup of strawberries we can add two cups of other fruits and keep the same mixture in a smaller amount.
Sometimes it is useful to write a ratio in another way. For example, there are 8 cups of strawberries added to a fruit salad for every 16 cups of other fruits. This is an 8:16 ratio of strawberries to other fruits. However, it can also be represented as 1 :2. So if we add one cup of strawberries we can add two cups of other fruits and keep the same mixture in a smaller amount.
This is an example of scaling down by a scale factor of 5. The ratio 8 to 11 is the same as the ratio 40 : 55.
Here, we scaled up by a factor of 8 to create two equivalent ratios.We can make a string of equivalent ratios by continuing to scale up or scale down.1 : 3 = 2 : 6 = 3 : 9 = 4 : 12 = 5 : 15 = 6 : 18 = 7 : 21....
All of these ratios show the same relationship.
Simplifying ratios to the simplest form can be helpful when solving problems that deal with ratios. You can simplify a ratio the same way that you simplify a fraction. This is basically just scaling down until you can no longer scale down anymore.
Ms. Jaskolka gave us questions related to ratios and simplifying ratios in groups and then individually to show our understanding of scaling up and down ratios.
Then we had French.
Next, we worked on our electric cars. Science Fair is next Thursday.
After first recess and lunch we were give a challenge to build a glider. We were given instructions on how to build a glider and then we tested what would happen if we changed some of the characteristics of the plane: both flap up, both flaps down, one flap up and one flap down, adding weight using a paperclip, and then we further tested our paper airplane to see how it could be the best flier. For homework we are writing a report based on todays findings.
We then worked on our Ontario writing assessment and Polar expressions entry.
After second recess and lunch we had physical education.
Homework:
1.Read Daily
2. Math sheets
3. Finish airplane package
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