Many students cringe when they see a subtraction problem with multiple zeros. The “Subtract One” strategy in this lesson involves reducing the top number by one to turn the 0 digits into 9’s and then adding the one back in at the end.

This introductory lesson on addition will give your students a great start in understanding how to add! It can be used as a stand-alone or support lesson for the Ladybug Addition lesson plan.

If your students understand PEMDAS and its role in the order of operations, GEMDAS will be a breeze. The “P” is replaced with a “G” to represent a wider range of grouping symbols.

Help your class conquer division with this lesson that has them find the unknown factor using multiplication!