Category Archives: Math

Any ideas from lessons will be in this category

addition table

Hello Division 17,

We have started our chapter focusing on addition and subtraction.  Our lesson today focused on the addition table.  We were looking for different patterns, interesting observations and all the different facts.  Please go over this table with your child.  Can you find:

addition table

  • doubles
  • neighbours (ex. 3+4, 4+5)
  • the friends of 10
  • reciprocal equations

It is important for your child to memorize these facts to 18 to help with double and triple digit equations.   Work with your child to help discover strategies to help with addition fact memorization.

Here is the table in PDF form in case you would like to print one off for your child.

addition table

See you,

Mme Rode



Subtraction magic!

Hello Division 19,

A subtraction strategy to try

Here is a subtraction strategy to try that makes double/triple digit subtraction a real breeze! Thanks to my sister who went to a math workshop with the wonderful Carole Fullerton (the Richmond Math consultant) who taught me this strategy yesterday!

How to use this strategy


456 -284

First make 284 a friendly number by adding 16 to the number. **A friendly number is a number that ends with 0, such as a ten, a hundred, a thousand (etc).**

This makes 284 a friendly number of 300. Since you added 16 to the bottom number, you will need to add 16 to 456 changing it to 472. Now simply subtract: 472-300 and you will get the answer. 172. Of course you can use a more traditional method and you will get the same answer.

This strategy works great with double digit subtraction. Let’s try…

84-38. To make 38 a friendly number of 40 you would need to add 2 to 38, and then since you added 2 to 38, you must add 2 to 84. Your new friendly subtraction sentence becomes 86-40, which is easily done in your head to get the answer 46.

Try this strategy with your child. It will really help with mental math computation for subtraction.

Have a great evening!

Mme Rode

Numbers to 100

Hello Division 20,

This week we are starting our unit focusing on numbers to 100.  As your child is in the French Immersion Program it is very important that he/she knows the number names for numbers to 100.  Below is a PDF document that has a 100 chart as well as the number names in French.  The numbers 69-99 are particularly tricky so please practice at home with your child.  I will file this PDF document under the “For Parents” page- ways to support your child.  There are also some Youtube videos for numbers to 100 under the “For Kids” page-Vocabulary.

Numbers to 100

Hope this helps,

Mme Rode


Les amis de 10

Hello Division 19,

We are continuing with our unit of addition and subtraction.  It is very helpful for your child to know the “friends of ten” or “les amis de 10”.  It is to the tune of “so do la fa mi do ré” from the Sound of Music.  For grade 1s, we were working on friends of 10 and the grade 2s were working on friends of 20, which is an extension of friends of 10.

It would be great to practice this song at home with your child. I will file it under math songs.

0     10

1     9

2 et 8

3     7

4     6

5  et 5

6     4

7     3

8  et 2

9     1

puis c’est 10      0

It is catchy and helps them remember the friends of 10!

See you,

Mme Rode

Candy estimations

Hello Division 19,

Tomorrow is Halloween.  We have been learning about estimating in math for both grades. I have asked the kids to make an estimation for how many candies they will collect tomorrow night.  When your child comes home tomorrow from trick-or-treating, please have him/her count the number of candies collected.  Please write the amount down in your child’s agenda so he/she can share the amount with the class.

My estimation with Ava is 18 candies.  We only go to 5-6 houses and 18 is plenty for her!  I will have to hide the candies afterwards because she loves chocolate!

See you tomorrow.  Remember costumes in the afternoon only.

Mme Rode

2 new pages added

Hello Division 19,

I have added 2 more pages to the blog.  One page is dedicated to French dictée sounds and can be found under the main dictée page under the subpage: Ways to help your child.

The other page I added is under vocabulary with the subpage: Math.  It is 3D solids and the vocabulary names in French.

See you,

Mme Rode


Hello Division 19,

I received a request to add some links to pages for Geometry.  Right now, we are learning about 3 D solids.  Take a look at these pages to learn more about both 3D solids and 2 D shapes.

This page focuses solely on 3 D shapes.  All you need to do is click on the solid and it will tell you about its properties as well you can have it rotate. Another key thing is that you can print out each solid’s net so you can make them at home!






This page is a little collection of online activities you can play that focus on 2D shapes as well as 3 D solids.






See you,

Mme Rode

Counting money

Hello Division 19,

This past week the students were practicing skip counting using money.  It would be great if you could continue this important life skill at home with your child.  Below are links that focus on counting Canadian money.  Also, it would be fun to get your child to count the change in your wallet.  It does two things….gets them counting and helps you know how much change you have!

See you,

Mme Rode

Measurement Obstacle course

Dear Parents,

This past Thursday, we made an obstacle course for a little lego person as a wrap up activity for our measurement unit.  It was so much fun!  Everyone had such a good time being creative and showing learning at the same time!  In the obstacle course, the children were able to represent all the different forms of measurement we covered during the unit.

In the course the students represented:

  • measurement of time by using a calendar (picking a date for the course)
  • measurement of height: they had to build an obstacle higher than 5 cm and then measure to verify
  • measurement of width: they had to build an obstacle that was wider than 8 cm and then measure to verify
  • measurement of non-standard units (paper-clips and counters) to measure length
  • identifying heavy and light obstacles
  • measurement around objects by creating a pool and then measuring around it

If the lego person could talk, I am sure he/she would say that the course was so much fun and super challenging to complete.  Take a look at the pictures below and have your child explain his/her course to you.

Baking is a great and super fun way to practice measurement of volume.  By having your child help measure the flour, sugar, baking powder/soda, you are giving him/her the opportunity to explore different measurement tools, such as cups, tablespoons and teaspoons.

Since the weather is so miserable these days why not make a batch of playdough with your child.  Here is a good recipe:

Uncooked Play Dough

2 cups of plain flour
4 tablespoons of ‘cream of tartar’
2 tablespoons of cooking oil
1 cup of salt
2 cups of boiling water
food colouring

 I pulled this recipe from this website:

I made this batch for Ava and it lasted well in ziplock bags.

Have a happy weekend and see you Monday.

Mme Rode

Math and more Math!!!

Hello Division 19,

As we wrap up our math unit on addition and subtraction (for now…) I have found some more resources to help support your child at home.  I will also copy this post and put it on my “For Parents” page and “Learning Resources-Math” page.

It is easy to play games with your child.  Today we used a deck of cards and played addition slap.  Get your child to explain the rules.  You can play with 2 or more players, it will just affect how many addends you have in the equation.

Worksheets are always great review but by making math into a game it makes it more fun for all!

Dice are always fun to play with.  Have you ever played addition Yatzee with your child.  Roll 5 dice together and whoever has the highest sum wins a point.  Fun times….

Here is a pdf document that was sent to me from our math consultant Carole Fullerton.  It has websites for math activities and how you can incorporate math at home, at the grocery store and outside.









MathWebSites (this is a pdf file)


Mme Rode