Math4Teachers

This lesson has contains guided notes and an answer key for a lesson on cross multiplication. Students will first do a real life baking problem involving proportions. They will then be asked to compare their answer with the original problem and make a conjecture about a shortcut. Students will then be guided in proving that cross multiplication always works. Finally, students will solve a problem with and without cross multiplication, to convince them that both methods work, but cross-multip

This is an interdisciplinary lesson designed to teach counting rhythms through the lens of math and fractions. No knowledge of music is required, it starts from the basics! This can be used in a math or music classroom.

This activity is a fun, quick way for students to practice word problems using percents. It can be used as bell work, a quick quiz, or a ticket out the door. The "sum it up" portion allows students to check their work for correctness, helping students to avoid simple mistakes and allowing the teacher to check for understanding.