TEKS & Objectives
7.1.E create and use representations to organize, record, and communicate mathematical ideas;
7.1.A apply mathematics to problems arising in everyday life, society, and the workplace;
We will strengthen our number sense by practicing mental math.
I will identify negatives numbers on a number line.
1. Complete warmup.
2. Review: Even and Odd
- Click (or right-click) on the die below.
- Set the pulldown to roll only one die.
- See how quickly you can identify whether the number revealed is even or odd.
3. Introduction to Negative Numbers
- You’ve probably seen a number line before. They show integers in a line.
- Integer is just another name for a whole number (not a fraction or a decimal).
- Most number lines look something like this:
Some numbers are less than 0.
- We call those negative numbers.
- To imagine them, it can help to see a number line going up and down, like this flagpole:
- In this picture, the flagpole is 7 feet tall above ground, with the green ground at 0.
- The flagpole also extends 2 feet underground.
- The flagpole is longer than 7 feet, but 2 feet are underground.
- Usually, we see a number line that includes negative numbers, going sideways and looking more like this:
- Remember, integer means whole number (not a fraction or a decimal).
- Let’s look at negative numbers on a number line in more depth.
- Watch the video below:
4. Practice placing numbers go on number lines.
5. Quick Review: Touch Points (You add the dots)
Review the touch points chart below:
- Draw the dots on the smaller number in each problem.
- Remember, dots inside circles are counted twice.
- Solve the problems.
6. “Introduction to Negative Numbers.”
7. Complete assignment at Brainzy.
Comparing Numbers Quiz
Ski Racer: Odd Numbersr
Dino Kitchen: Place Value to the Hundreds Place
Look for the assignment with today’s date.
Find access codes here.