Today we started learning about arrays.
Some of our blogging buddies have been learning about arrays too. Check out what our New Zealand friends, B4, did with Mrs McKenzie. In New South Wales, Mrs Dowling also focussed on arrays with her class.
We also found an old post by Mr Salsich’s third grade class in Connecticut, USA. Thank you Mr Salsich for letting us use some of your work!
An array is a group of objects arranged in rows and columns. Each row has the same number of objects.
Arrays are useful for skip counting and solving multiplication problems.
The array above has 3 rows of 4 blocks. That is 3 groups of 4, or 3 x 4. We can find out how many blocks there are by skip counting by 4’s: 4, 8, 12 – or by doing repeated addition: 4 + 4 + 4 = 12.
There are 12 blocks. So, 3 x 4 = 12.
Here is a slideshow of some arrays around our classroom! Can you solve the multiplication problems?