Below are Three - Act math tasks and lessons I use with my classes. If you have never taught a lesson like these I suggest you start with Dan Meyer's post. Feel free to use and edit these lessons. Click away and read about each lesson.

This takes the classic maximizing the area of a rectangle problem and adds elements of curiosity and purposeful practice to help reveal the relationship.

A Hands-on activity is blended with interactive technology. Students begin with puzzles but ultimately create algebraic expressions and solve equations.

This fall themed activity asks students to predict how many rubber bands will implode a pumpkin. Use data collected from over 120 exploded pumpkins and create scatterplots to make predictions.

Promote literacy while learning math! Students calculate and track over time their words/min reading rate. Students will also explore the relationship between fast reading and comprehension.

In this multi-strand lesson students will use estimate and calculate how many paper balls fit in a bucket. They then will race to see who can make more shots into the bucket in a minute.

Students explore properties of parallel lines & transversals. They will create parallel lines on the floor or outside with chalk, and finally use Explain Everything to answer problems.