Correlations
Meeting Emma Jane and Jackson
Using math to solve a crime!
We are being forensic scientists today, and using math to solve a crime. An ulna was found, and we are using a scatter plot of ulna length to height to predict the height of the victim. We are also using our own data to create a scatter plot of foot length to height to determine an approximate height of a suspect based on the size of a footprint.
Multiple solutions
We were looking at how to prove a point (3,5) is the intersection of two given lines y=x+2 and y=-2x+11.
Some solved the system by substitution
Some substituted x and calculated y for each line
Some made tables of values for the lines and checked if (3,5) was on both lines
Some substituted x and y and verified that the two sides remained equal
Some solved by graphing
It’s pretty awesome to have so many ways to approach a question! Many thanks to those who explained their work today.
Grade 10 review
Grade 10s, you are working hard to review all of the grade 9 course work. Here are some resources for you to look at (en français of course)
Using Desmos
We had a look at an interesting app/website that can help us with graphing scatter plots and also equations. It’s free, and pretty easy to use. Download it and give it a try!
The great left handed cheerio stacking race
We are stacking cheerios today!
We are comparing the stacking rates
And making graphs
Here are the worksheets we used: grade 9 and grade 10
After we determined who stacked cheerios the fastest and the slowest, we set up a head to head competition, and we levelled the playing field, giving the slower person a head start (we calculated how many cheerios they’d need to have as a head start–initial value).
Work for Feb. 9 2017
Grade 9 Exam Review
Hi Grade 9s,
It’s been kinda crazy with two snow days in a row. EQAO has been moved to Thursday and Friday, and with our chapter 5/6 test (I’ll make it a small one) on Monday, we will have only 2 days in class to review. I have made this checklist to help you get started on your studying tonight and this weekend.
Grade 10 Review
Dear Grade 10s, Here’s a checklist of all you need to know for the exam. It’s been rough with 2 snow days in a row. I hope you are working hard. We will have our test Thursday and Investigation Friday in class time.








