Sorry, my Internet was down at home.....

Math
Great improvement with growing shape patterns. I was so pleased to see the different kinds of shape patterns that showed growing number patterns. BRAVO!

Grade fours complete Your Turn Questions for Lessons 4 and 5. A few questions were a little tricky. Is the first number the first term or after it has been increased? Several students were REALLY thinking.

A club has 4 members and 5 more join each day. Use a table to show the number of members each day for the first 6 days.

Let's assume that at the end of the first day there are 4 members. At the end of the second day there are 9, third day 14 and so on. I understand how some of you thought that at the end of the first day there were 9 because 4 was like "day 0". It's easy don't over think it!

Casey buys three posters every week. So far, he has collected 30 posters. Show how you can use patterns to help you figure out when he will have 100 posters.

Let's look at the problem above. There are many ways to solve this problem. A table might look like this:

Week    Posters
1          30
2          33
3          36
4          39
5          42

42 + 60 = 102 posters. You would need about 60 more posters from the 5th week to get to 100 posters. 60 posters divided by 3 posters per week = 20 weeks. I chose the fifth week because I knew that I could divide 60 by 3 easily.

20 weeks + 5 weeks = 25 weeks.

You could also find the answer without constructing a table. 30 posters + 60 more posters = 90 posters. 60 divided by 3 = 20 weeks. So at (1 week + 20 weeks) 21 weeks you would have 90 posters, 93 at 22 weeks, 96 at 23 weeks, 99 at 24 weeks and finally 102 at 25 weeks. You must remember that at the 21st week you would have 90 not at the 20th week.

Grade fives you needed to look ACROSS THE T-CHART to find the rule for calculating the number of stacks from the number of boxes. Do you see the pattern?

Stacks   Boxes
1           1
2           4
3           9
4          16
5          25

Most of you wrote the pattern rule:
Start with 1 box add 3 boxes, then 5 boxes, then 7 boxes, and so on.

That is the rule down the t-chart, but what about ACROSS the t-chart?

1 x 1 = 1
2 x 2 = 4
3 x 3 = 9
4 x 4 = 16
5 x 5 = 25

So if you know the number of stacks, multiply the stacks by itself or SQUARE the stacks to get the boxes. In 8 stacks there are 8 x 8 = 64 boxes.

If you know the number of boxes, think of a number that multiplies by itself to get the number of boxes.

For example, how many stacks for 81 boxes? ___ x ___ = 81
9 x 9 = 81 so the number of stacks is 9.

Social Studies

Today we delved into the election a bit. Please read the handouts but do not complete them. Here is a little information and video about ranked ballots. London is the first city in Canada to use ranked voting instead of the traditional "first past the post" voting.

https://lfpress.com/news/local-news/cities-across-canada-watching-londons-ranked-ballot-election

Here is video explaining "first past the post" voting using Ontario as an example.
https://tvo.org/video/programs/civics-101/first-past-the-post

Reminders:

• Cross Country tomorrow DRESS WARMLY, lots of layers, winter coat, hat, mittens, sweatpants, running shoes (of course), water, big lunch, lots of snacks, something to sit on and something to keep you warm (blanket) and something to pass the time. Be prepared to be outside for 2 or 3 hours! The forecast in the morning is 2 degrees.
• Bring uniform to change into and an extra pair of socks! Come to school ready to race with all your layers on top.