Using Math Mysteries in the classroom is a fun way to mix things up when consolidating and/or reviewing math skills. However, for some classrooms, it can be a little bit challenging to keep excited students contained from sharing 'classified' information. To prevent clue or mystery solution 'spills' happening, I recommend setting up some Math Mystery expectations for your class. Read on to find out my suggestions for rules and a free poster download to use. 

This week I'd like to share an anchor chart I made to teach addition with regrouping. I found the use of place value blocks helpful in explaining the concept of carrying the ten over. 

The different colors used are intended to help highlight and show the steps throughout the process.