Here’s a quick resource for exponent and scientific notation practice that aligns nicely with Illustrative Math / Open Up Resources Grade 8 Unit 7.

I first saw the “One Incorrect” activity model on Greta B’s blog *Count It All Joy*. I believe her original inspiration is from the work of Don Stewart here.

Since Unit 7 includes so much “Which of the following are the same as . . . ?”, this practice structure seemed like a perfect fit. Use whichever pages fit your needs. Note the open middle style appear on this unit assessment. Chose the level of openness you are comfortable with.

**Some details on construction: **Each sheet has a picture over the top of the actual editable equations/text. So if you would like to edit problems, or make a different page for each group and have students rotate and find the “one incorrect” on their classmate’s creations, you can easily duplicate a slide and edit it.

**Tips for those feeling pressed for time as they approach unit 7:**

**Lesson 1-3** can be condensed. Use the pre-assessment to decide how much. 2 days? 1 day?

**Lesson 4 and 5** are worth slowing down on a bit. The tables are amazing in lesson 5. Take time to fully understand all that first table does for you and reference back to it through the lesson.

**Lesson 6 and 7** extend exponent rules to other bases. If you have an anchor poster for your work from lessons 1-5, update it here. See the note below from the Activity Synthesis for lesson 6, activity 2:

I would do this by using post-its to replace the 10’s with 2’s, then 5’s, and eventually rewriting with x’s. These are the lessons where **lots** of exponent rule practice is built in.

**Lesson 8 and Lesson 9: **Great lessons, but if time is an issue and you are able to revise a test question, this is a spot where the time desperate can cut. Note that test question number 6 part c is covered in lesson 8.

If you are minimizing lesson 9, be sure to include a moment for big and small number vocabulary, maybe including an anchor chart for reference.

**Lesson 10: **Spend the time here. There are some amazing resources to explore with this lesson.

For **Activity 10.2**, check out the applet in the on-line materials for placing numbers on the number line. This is something to consider having students interact with in pairs.

Also in **Lesson 10, Activity 3** has a must-use applet to visualize the expanding number line.

**Lesson 11** goes through the same thinking, only with very small numbers. Desmos has a activity, *The Solar System, Test Tubes, and Scientific Notation*, that combines lesson 10 and 11, as well as some fun Scientific Notation practice.

In the Activity attached at the top, there are also 4 pages practicing the second half of the unit.