math and science education



10 Tweeting Twins
(skip counting by 2)

The total of 10 twins,
Twittered and tweeted,
We’re trapped on the twigs of a tree!
How many pairs of twittering twins,
Make 10 tweets from 10 twins, let's see!
Whenever I'm counting,
Twittering twins,
What is the math that I use?
If things come in pairs,
Like twins on a tree,
I'll choose to use counting by 2's...

Count by 2's when you're counting pairs of things like twins!
2, 4, 6, 8,

Mr. R.'s count by 2's song!

Now watch Mr. R.'s Count by 2's song to practice!

watch Mr. R's count by 2 video! or watch Mr. R.'s count by 3 video!
count by 2 song- common core count by 3 song- common core

Math Challenges
If I count 9 pairs of thin twins on a tree, how many twins are there in total?
If there are 28 twins on a tree, and 4 pairs of them leave for lunch, how many twins are left in the tree?
If there are 36 thin twins in a tree, how many pairs of twins are there?

Watch Mr. R.'s skip counting videos
skip counting number videos

Listen to Mr. R.'s double number songs!
double number songs



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