Post on 23-Jan-2016
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9/9/13 Mon
Boot-Up 9.9.13 / 6 min.
TTW Intro: We’ve been working w/ s, incl s within s. Today, we’ll continue to work w/ s, but will focus on finding areas of s, as well as other shapes. TSW: Find 2.2.2
x
2x
x - 16
A
B C
What is the measure of each angle shown?
mBAC = ______
mACB = ______
mCBA = ______
TTW: TSW:
1) Find 2.2.2
2) Read 2.2.2 Intro
3) Ask: What is Area? (Make sure S know difference betw. P&A. Show 6th grade ppt lesson if S unsure.
3) Read 2-70
4) 18 min: In pairs, Strategize / Solve 2-7 a – f.
4) Bring class together. Review strategies / solving of 2-70 a – f.
4b. SWBAT:Calculate the perimeter and area of regular and irregular shapes using a variety of methods.
Perimeter:
The total distance around the outside of a 2-dimensional shape. You calculate it by adding together lengths of all the sides of a shape.
Today’s Vocabulary
PERIMETER
How are Perimeter & Area different?
AREA
What is the area of this basketball court?
Area: The measure of the space (or region) inside a 2-D shape. It’s measured in square units.
Today’s Vocabulary
2-70-a,b
2-70-c,d
2-70-e,f
http://www.learner.org/vod/vod_window.html?pid=1994
PARALLELOGRAM AREA: A = b x h
10 f
t.50 ft.
TSW: Text p.573 #1, 3, 9
Why would calculating the area of a parallelogram be the same as that of a rectangle?
10 ft.
TRIANGLE AREA: A = b x h ÷ 2
12 f
t.
TSW: Text p.570 # 5, 9, 2
The area of the rectangle below is 120 ft.2
How can you figure out what the area of a triangle would be?
2-72-a,b
2-72-c
2-73
1) Review your notes from yesterday to find the area formulas for the following polygons.
2) Write down each formula next to its corresponding polygon. 3) Then calculate the areas for each polygon.
AREA Warm-up
10 ft.
50 ft
.
45 ft
.
8 ft.
15 in.
18 in
.
A = ?A = ?
A = ?
3 mins3/8/13DO NOWWhat is the area of the
red shape below?
A) 15 u2 B) 18 u2 C) 21 u2 D) 36 ft2
Put your Homework on your desk for teacher to pick-up.
9/10/13 Tue
Boot-Up 9.10.13 / 6 min.What is the measure of each shown below?
1) You may use a calculator, but you MUST SHOW ALL WORK for full credit. You will not pass the test if all you show is the final answer.
2) You may not speak or make any other type of noise during test.3) You must keep your eyes on your own papers.4) If you finish early, raise your hand silently & teacher will give you
assignment.6) Failure to follow these instructions will result in a failure on the test.7) You have all the skills & knowledge you need to perform well on
this test. Just remember what we discussed in class & do your work slowly & carefully. Check your work several times.
Good luck!
9/11/13 Wed
What is the area of the red shape below?
A) 15 u2 B) 18 u2 C) 21 u2 D) 36 ft2
Boot-Up 9.11.13 / 6 min.
Of the shapes at right, which do you know how to find area?
Of the shapes at right, which do you know how to find area?
2-79
2-80a
2-80b
2-81
2-82
2-82a
2-83
2-83
9/13/13 Fri
Boot-Up 9.13.13 / 6 min.
1) Write an equation showing that the angles shown below are congruent:
50
2 x 25
2) Write an equation showing that the angles shown below are congruent. Then find each angle measure.
2x + 3
4x - 9
Test Review
NC Finish Test
YTD Average Ch 1 Quiz Algebra Review & 1.1.3 Perimeter/Area
Ch 1 Test Symmetry, Transformations, P&P
Lines, P&A Zoom, Angles
Ch 2 Sec 1 Quiz Angles
0
10
20
30
40
50
60
70
80
90
100
7774
80 82
Block 1 Test Performance: Class Averages / Term 1
1st Time 2nd Time
0
10
20
30
40
50
60
70
80
90
100
7470
7882
Block 2 Test Performance: Class Averages / Term 1
1st Time 2nd Time
Today’s To-Do List
2- 99 2-101 2-100 2-102
2-103
7
2?
7
7
7
7
2
22
2
What shapes do you know how to find the area of?
Today’s Objective:
Mathematical Product:
SWBAT:* Learn what qualities make shapes alike & what makes them different.
Mathematical Practice / CCSS Standard:
SWBAT: 1) Make sense of problems,
2) Persevere;
3) Attend to precision as they describe common shapes & their characteristics.
*SWBAT = Student Will Be Able To 2 Lessons TodayParticipation Quiz TodayTeamwork important
Resource Manager: Make sure to get all of the supplies & call the teacher over, if needed. Take shape inventory at beginning & end. Make sure all shapes are returned to bucket.
Facilitator: Make sure that everyone can participate & that no one dominates the process.
Recorder/Reporter: Make sure that everyone can reach & see the Venn diagram & the shapes. Record shape placements / present findings at end of lesson.
Task Manager: Make sure each team member justifies statements & decisions.
y
x
I
IVIII
II
UN # __________Name __________ 8/29/13 Test # 1
11)
8/30/13 Thu
y
x
I
IVIII
IIA B
D C
Translate (Slide) rectangle ABCD so that point A is at the origin.
Tell me -- do I really look like a “Leonard” to you?
A B
D C