Lesson Introduction - Similarity, Right Triangles, and Trigonometry

Similarity, Right Triangles, and Trigonometry - Grade Band: High School.

Introduction to the Toolkit Lesson

Classroom

Setting: Group of Students

Non-classroom

Setting: One-on-One

Before the Lesson

Before starting this toolkit, students should be able to complete the background:

During the Lesson

Students should be expected to engage and discuss their thinking with one another. Try to balance their opportunities to practice independently as well.
If the skill is too abstract, the optional hands-on methods can help students really “see” the triangles.

After the Lesson

Reflection on similar triangles
Group students based on interest and assign them a Real World Problem based on that interest.

Before the Lesson

Before starting this toolkit, students should be able to complete several background knowledge checks. It is recommended that you review the background information in this order:
It is recommended that you start with the Proof activity, and then move into the Height of a Building activity.

During the Lesson

Though this is the suggested flow of the lesson, take your cues from the student you are working with and adjust time and order based on their needs.

After the Lesson

Reflection on similar triangles
To solidify learning and apply this new skill, have your student select 1-3 Real World Problems to engage in over the next couple of days or weeks.

Visit the Resource Bank to learn more about Grouping Students.

Materials needed

Be sure to have these materials handy!

Each individual student will need:

Other Materials needed:

Pencils
Calculators
Computer(s)
Projector (If Available)
Printer (If Printing Materials)
Hands-On Manipulatives For Modeling

A Note About Timing

This toolkit has several components and activities. The activities in this toolkit can be divided up over several days and can be completed at any time. There is a suggestion for breaks throughout the toolkit. However, you know your student(s) best and know the amount of time you have to help them. Feel free to take a break after every activity or chunk activities together in the amount of time you have. Timings are approximate and will depend on the needs of the student.