We started a new unit- Moving Straight Ahead today.
The Units first Investigation focuses on:
Understanding patterns of change between independent and dependent variables for linear relationships.
Here are the notes from today. These terms are all review from previous units.
Linear relationship or function: “A relationship in which there is a constant rate of change between the two variables.”
Ex: y= 4x + 10
Independent variable (x-value): “A variable that isn’t effected by the other variables. Stands alone.”
Ex: (4,10) (6,2)
Dependent variable (y-value): “A variable that depends on the independent variable.”
Ex: “For example, a test score could be a dependent variable because it could change depending on several factors such as how much you studied, how much sleep you got the night before you took the test, or even how hungry you were when you took it.”
y - Intercept: “Location where the line crosses the y axis.”
Coordinate Pair: “A pair of numbers in the form of (x,y) that gives the location of a point on a coordinate graph.”
Coordinate Grid: “A grid in which you can plot coordinate pairs, on the axis of (x,y).”
Today we continued our work on Investigation 4.3 about the Distributive Property. We worked with multiplication over both addition and subtraction. The students also did well to take their knowledge of the order of operations and positive and negative numbers to help expand expressions.
To help drive the property home, I thought I would share a helpful link from cool math.com: