Inv 1.4 - The Chip Model

Problem 1.4

Focus Question: How can you use a chip model to represent addition and subtraction?

In this investigation, we will be using chips to represent positive and negative integers. 

You may have heard the terms, "In the red" (meaning you owe or have a negative amount of money) and "In the black"(meaning have a positive amount of money)

In the image above, there are black positive chips and red negative chips on the board. Some red and black chips have already been put together in "zero pairs" that cancel each other out. Is this image "in the black" or "In the red"? How do you know?

Now try for yourself: 

CLICK HERE TO ACCESS THE ONLINE CHIP MODEL

Inv 1.2 - Plotting Inequaltiies

EQ: How can you use a number line to compare two numbers?

Help Video
Plotting Inequalities

Symbols

Practice ONLINE!
Link to Practicing Plotting Inequalities

Inv 1.1 and 1.2

Helpful Links
Great site on adding and subtracting positive and negative numbers.

Great Site on Understanding the Number Line

Helpful link from Math Plant on Rational Numbers

GUIDED NOTES
Click here to access the guided notes to Inv 1.1 and 1.2


ESSENTIAL QUESTIONS

Problem 1.1

Focus Question: How can you find the total value of a combination of positive and negative numbers?

Problem 1.2

Focus Question: How can you use the number line to compare two numbers?

Comparing Integers

Inv 3.1

Focus Questions:

What combinations of three side lengths can be used to make a triangle? How many different shapes are possible for such a combination of side lengths?

Additional questions:
Are there special conditions for the side lengths of a triangle?
Can a triangle be built with any three side lengths? Explain.

Random Number Generator - Link

Helpful Links:

Click here to access the virtual polystrips

Link to Math Warehouse Triangles sides and angles.

Students working with Polystrips today to find out what combinations of side lengths will create triangles.