We are up to our elbows in addition AND subtraction. According to the new Common Core Standards the traditional algorithm is a fourth grade standard (CCSS.Math.Content.4.NBT.B.4 Fluently add and subtract multi-digit whole numbers using the standard algorithm.). We wanted to make sure we offered students SEVERAL strategies for addition and subtraction so that the algorithm actually makes SENSE rather than becomes a rote task with no meaning.
One strategy we using to teach addition is the open number line. This is a great strategy that transfers REALLY well to subtraction. The difference between an open number line and a closed number line is that an open number line has no numbers on it- students create and write the number line starting and ending at whatever number they need.
Parents are often VERY confused at all this "new-fangled" math as it is very different from what we learned as children. I created this handout to help teach parents.
Click here to down load the parent handout freebie!!!We are up to our elbows in addition AND subtraction. According to the new Common Core Standards the traditional algorithm is a fourth grade standard (CCSS.Math.Content.4.NBT.B.4 Fluently add and subtract multi-digit whole numbers using the standard algorithm.). We wanted to make sure we offered students SEVERAL strategies for addition and subtraction so that the algorithm actually makes SENSE rather than becomes a rote task with no meaning.
One strategy we using to teach addition is the open number line. This is a great strategy that transfers REALLY well to subtraction. The difference between an open number line and a closed number line is that an open number line has no numbers on it- students create and write the number line starting and ending at whatever number they need.
Parents are often VERY confused at all this "new-fangled" math as it is very different from what we learned as children. I created this handout to help teach parents.
I LOVE this! I was about to teach addition with the 'regular' number line. I am so glad I found this :)
ReplyDeleteThank you so much for the idea. It goes so well with counting tens and ones :)
Tania
My Second Sense
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ReplyDeleteI am so happy to have found your blog! I am a new follower! Thanks for this great handout!
ReplyDeleteJeannine
Creative Lesson Cafe