10/5 Bell RingerStep 1: Grab today’s materials from the front

of the room

Step 2: On your bell ringer sheet, set up a coordinate plane (see example), label the x and y-axes and then plot these three points:

(2,6) (4,1) and (3,2).

Homework: Finish Independent Practice on Coordinate Plane navigation.

10/5 News and Notes

• Did you reach your goal? Are you Raising the Bar?

• Schedule for week:– Today: Coordinate plane review– Tom: Reflections in coordinate plane– Thurs & Fri: Translations and Rotations in

coordinate plane– Mon: No School– Tues: Review– Wed: Test

10/5 Agenda

I CAN identify, navigate and plot points in all four quadrants of the coordinate plane.

1. Bell Ringer

2. New Material – Examples

3. Connect the Dots

4. Independent Practice

5. ACT Question of the Day

Bell Ringer Review / Intro to New Material

X

YRecall that all points are in the form (x,y). This is called an ordered pair.

(2,6)

(4,1)

(3,2)

(2,6)

(4,1)

(3,2)

Intro to New Material

X

YAll of the points were in the first quadrant. What are the other 3 quadrants?

What happens when we make X negative?

(-2,6)

(-4,1)

(-3,2)

(-2,6)

(-4,1)

(-3,2)

I II

IVIII

Intro to New Material

X

Y

What happens when we make Y negative?

(2,-6)

(4,-1)

(3,-2)

(2,-6)

(4,-1)

(3,-2)

I II

IVIII

Intro to New Material

X

Y

What happens when we make X and Y negative?

(-2,-6)

(-4,-1)

(-3,-2)

(-2,-6)

(-4,-1)

(-3,-2)

I II

IVIII

• Now make a general conclusion.

• What will be true of x and y in each quadrant?

• Q1: (x, y)

• Q2: (-x, y)

• Q3: (-x, -y)

• Q4: (x, -y)

X

Y

I (+,+)II ( –, +)

IV (+, –)III (–, –)

Connect the Dots

• Each column will create a graph. Here’s the process:

• Round 1: Plot & label given point; Pass back.

• Round 2: Check previous, plot new point; Pass.

• Round 3: Same as 2• …• Round 6: Check all, connect dots, pass.

X 4 4 -6 -1 -6

Y 2 -3 2 6 -3

X 0 1 -1 2 -2 3 -3

Y 0 1 1 4 4 9 9

Independent Practice

• You now have all but the last 5 minutes for the Independent Practice

ACT Question of the Day

Given points (5,3), (3, -2) and (1,9), which quadrants are empty?

A. I and IIB. II and IIIC. III and IVD. I and IVE. II and IV

Homework: Finish Independent Practice on Coordinate Plane navigation.