High School Geometry Activities

To get ready for teaching high school geometry again, I'll be adding a bunch of geometry coloring worksheets, geometry error analysis activities, geometry escape rooms and geometry task cards here that my students will complete next year as part of our curriculum.

Over the last few weeks, I've been making some new geometry activities to get ready for my new teaching assignment in the fall. It has been a while since I've taught high school geometry, and the students I will be teaching will need a lot of support. My students take geometry before algebra 1, which will bring a unique challenge. So I've been building up a collection of engaging geometry activities that get students thinking while also being fun.

This has become a very long post! You can find all of my geometry activities here and the newest ones here. Throughout the school year, I’ll update this post with more geometry ideas and links.

High School Geometry Bundle

High School Geometry Activities

angles, lines, rays and line segments coloring worksheet activity

After starting the year reviewing integers, order of operations, and the scientific calculator functions, we'll get into geometry fundamentals. We'll start fundamentals by identifying angles, lines, rays and line segments. Students will color this angles, lines, rays, segments worksheet.

angles lines rays line segments matching activity

Then will match drawings, symbols and names to complete this angles, lines, rays, segments matching activity.

Sometimes, I like adding mazes or other fun little activities to student warm-ups to help get pencils into hands when students enter class. Here I added a maze to our first intro to geometry warm-up with maze. There are a bunch of online maze generators to choose from that allow you to make mazes in different shapes.

naming angles coloring worksheet activity

Fun math activity and classroom ideas for teaching students place value, rounding whole numbers, and rounding decimals

Whether students are rounding, comparing numbers, estimating, working with money, or multiplying by powers of 10, having a firm grasp of place value builds students' number sense and confidence in their math abilities.

Free 4-Unit Pack of Consumer Math Curriculum Warm-ups

This FREE 4-unit pack of consumer math warm-ups will get students thinking about real-world math as soon as they sit down for class. There are at least 6 warm-ups included for each curriculum unit listed below, along with answer keys:

How to find the increasing and decreasing intervals of graphs with this increasing and decreasing finder tool

Do your algebra students struggle with finding the increasing and decreasing intervals of graphs? This increasing and decreasing finder tool guides students where to look when finding the increasing and decreasing intervals.

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Students watch the graph move up and down the ruler on the side.

domain and range finder tools w/ increasing and decreasing

"These helped my algebra students so much! The directions on each finder were so helpful...especially when the graph has arrows and not endpoints." - Elizabeth Y

The increasing and decreasing tool was added to a similar domain and range finder tool that guides students where to look when finding domain and range. See the domain & range / increasing & decreasing tools here.

How to Stop Students from Second-Guessing on Math Exams

$Are your students constantly erasing correct answers and second-guessing themselves? Veteran teachers offer their best advice to new teachers.$

The brain is a funny thing. We've evolved these giant frontal lobes that can plan years in advance, but throw in a bit of test anxiety and we're suddenly running from a lion at dusk. When the brain detects danger, that massive frontal cortex shuts off and is just there taking up space.

If I had to estimate, every single student I have ever had in any of my special education math classes has had some level math anxiety. I have my theories as to why this is, but in this post I want to instead focus on ways to help students overcome this anxiety when taking tests so that they don't doubt their answers.

How to stop students second-guessing their math

I asked teachers on Facebook what they do to help students with this, and got a bunch of great advice. Their advice is below. If you'd like to read the original thread, it's here.

In this post, is the free compound interest reference sheet we use during our exponential functions unit in algebra 2.

This week, the plan is to finish learning about compound interest so that we can squeeze in projectile motion next week before starting final exam review the week after. It'll be tight, but that's the goal! Hard to believe there are only a few weeks left.

We started our exponential functions unit learning how to graph exponential functions by building tables, identifying a and b given a table, and writing the equations of exponential graphs with the y-intercept and f(1) highlighted.

We then moved on to compound interest compounding annually, then compounding more often. Today students started a compound interest escape room that covers compounding annually, quarterly, monthly, and daily. The escape room also comes as self-checking digital, but we used the printable version. It's more forgiving and keeps students offline.

Free Exponential Functions Growth - Decay - Compound Interest Cheat Sheet

Today, I made students this exponential functions cheat sheet that they can use as we finish up the escape room, exponential decay, and on their upcoming quiz as an IEP accommodation.

For decay, I may also give students this friendly percents reference depending on how things go. We may just stick with (1 - r), but I'd like them to have another perspective for finding the base of decay functions.

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2 Percent of a Number Cheat Sheets

In this post, there are two free percent of a number cheat sheets for a consumer math unit on calculating percentages of numbers and calculating discounts. Each can be added to student notebooks as a reference when learning how to calculate percentages.

Percent of a number cheat sheet

The first percent sheet reminds students of the divisor when calculating the percent of a number. For example, We can divide 125 by 5 to find that 25 is 20% of 125. This sheet prints on half a page to fit into a student notebook.

Friendly percentages cheat sheet

The second is a friendly percentages reference that's helpful for calculating discounts. If a shirt is 15% off, we can calculate the shirt's price by finding 85% of the original cost of the shirt. I always find this easier than calculating 15% then subtracting that amount from the original price.

This friendly percentages sheet can also be referenced during an exponentials unit when calculating decay. If the value of a car is depreciating by 15% per year, we can use .85 as the exponential's base.