WHICH One DOESN'T BELONG?

This game takes me dorsum to my Sesame Street days!  4 mathy blazon images or numbers are presented on the screen and the students come with reasons why one of them doesn't vest.  However, there's a catch.  Our goal in this game is to try to come up with a reason why each of the 4 images could exist considered as the one that doesn't belong.

I choose 1 of the WODB's from the website and give the students a minute or two to think of reasons to eliminate one of the 4.  I remind them that if they find a reason to eliminate one, that they should go along going and effort to find a reason to eliminate each of the four.  I then randomly select 3 students to share which ane they want to eliminate and their reasons why.  I record the students' ideas on the whiteboard and and then we open it up to anyone in the class to add their ideas.

Students go very excited to share their creative ways of eliminating one of the four images and tons of math concepts and terminology naturally come up up during these discussions.  It tends to create an first-class review of concepts that nosotros accept talked about as, during WODB, terms such as factors, multiples, prime, perfect square, digital root, even, odd and many more crop upwards again and again.  The hidden teaching gem in this activity is that every time a pupil shares an idea they are using reasoning and proving skills to communicate why their idea makes sense.  Every WODB day, I am amazed by the cool math ideas the students come up upward with to reason why a certain image should not vest.

Cheque out the WODB website.  I started with a few of the 'shape' category images until my students got the hang of information technology then moved on to the variety of images in the 'number' category.  Later on in the twelvemonth, I have the students create their own WODB challenges.  Alex Overwijk has some great blog posts that explain how he got his students to sympathize the challenging nuances of creating your own WODB.