Students will find parts of 100 using printable large ovens- print on legal size paper and you can increase the size to 11x14 at your local print shop for large work-mats (I like to laminate them and use them multiple times), cookie trays and counters, and finish off with a partner worksheet. This is a fun way for students to find parts of 100 and even can have a little treat when they are finished by eating their counters. I found 4D printable ovens off of Etsy that I used for my lesson. They were cute (time consuming to assemble though) and a great way to hold the cookie counters and trays. I hope your students will have as much fun with this lesson as mine did!
****This lesson includes lesson plan!