The Pythagorean Theorem
Free to teach as-is — the teacher guide, student handout, and slides are included.
Free — we'll email you an access link. Google Docs format.
Objective
I can use the Pythagorean theorem to find the length of a missing side in a right triangle when given the other two sides.
Part 1 of 3
Warm-up video
National Science Foundation News · 3:45
We don't generate video — this one is by National Science Foundation News on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 3
Practice
12 questions
State the Pythagorean theorem in your own words.
In a right triangle, which side is called the hypotenuse, and how is it related to the other two sides according to the Pythagorean theorem?
Part 3 of 3
Exit ticket
Quick comprehension check
“A right triangle has legs of length 9 cm and 12 cm. What is the length of the hypotenuse? Show your work. A right triangle has a hypotenuse of length 17 m and one leg of length 8 m. What is the length of the other leg? Show your work. A right triangle has one leg of length 6 km and a hypotenuse of length 10 km. What is the length of the other leg? Show your work.”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
Printable worksheet
Slides
Ready to present
We'll ask for your email to send your access link — nothing else.
Teaching a group at a different level?
Where are your students right now? We'll rebuild this lesson to match — including the teacher guide, student handout, and slides, saved to your Google Drive.
Adapt This Lesson

