Math lessons students work out for themselves.

Try a lesson

In this grade 7 lesson, students cut a circle into slices, rearrange them into a near-parallelogram, and answer three questions that build the formula for its area one piece at a time.

Another one to try

There is only one exponent rule is an algebra lesson where students find that seven of the eight exponent rules they memorized follow from the first one.

What's in every lesson

A figure students control

Students change the math and watch what happens, instead of reading about it.

A question at each step

The next step opens only after students answer, so nobody skims past the idea.

A note on every wrong answer

Each wrong choice explains what went wrong, so students can fix their thinking and try again.

A result built as they go

Students finish having derived the formula, not been handed it.

Nothing to install

Any modern browser on a laptop, tablet or phone, with no student accounts.

What makes a good topic

Ideas that are easier to see than to say. Formulas for area and volume, slope and rate of change, transformations, the unit circle, completing the square, and why the rules for exponents or the distributive property work all fit this format well.

How a custom lesson gets made

1. You tell me the idea, the grade level and where students get stuck.
2. I send a short plan: the figure, the steps and the questions. Nothing gets built until you approve it.
3. I build the lesson and test it on laptops, tablets and phones.
4. You try it, I make revisions, and you get a link to share with students.

Price

Each lesson is quoted by its scope. Email me the topic and grade level and I'll reply with a price.