Just a quick “photojournalistic” post today to show you what fun we had with a class warm up today!  Our goals?  To continue working on our subtraction with regrouping fluency and accuracy–and to be able to look for errors and fix them.

Here’s what we did.  You could easily do this with a set of cards you make…but I used the cards from my Precision Practice resource (this activity is listed at the beginning as one of the extra activities) because we had just used the cards a few weeks ago and, in typical fashion, they were not yet put away!  I have probably used them 8-10 times since the start of the school year in different ways–but this was a new one for us!

The directions were simple:  Students worked in pairs to draw two cards (I used 3 different levels of cards and students picked their own level of challenge–3 digit, 4 digit, or 5 digit).  Each child found the difference between the two cards, and then compared answers.