Math Week of Jan 5th

http://www.virtualnerd.com/common-core/grade-7/7_G-geometry/A/1/scale-map-distance-example

Monday Bell Work *show your work

A statue, honoring Ray Hnatyshyn (1934–2002), can be found on Spadina Crescent East, near the University Bridge in Saskatoon. Use the information below to determine the unknown height of the statue.

Agenda

• 1- bell work• 2- Agenda- ws • 3- Vocabulary• 4- Objective • 5- lesson *Scale Factor• 6- exit ticket

1. Multiplicative Inverse

What does this word mean to you?

This word actually means…..of two numbers whose product is one: aka as the reciprocal.

Examples… Explain how you would use this word in math.

Lesson

7.G.1 Solve problems involving scale drawings of geometric figures, including computing actual lengths and areas from scale drawing at a different scale.

Scale Factor

Scale factor video

Identifying Scale Factor

Model Actual

*reduce (simplify) and that is your scale factor

Try p. 258 #’s 1-2, 5-6

Using Scale Factor

Example: A picture was taken of a painting. The

picture is 5 cm wide by 8 cm tall. What is the actual size of the painting if the scale factor is 1/3?

Using Scale Factor

Example: A picture was taken of a painting. The picture is 5

cm wide by 8 cm tall. What is the actual size of the painting if the scale factor is 1/3?

To Solve: create 2 proportions (one for width and one for height)

Model 5 = 1 8 = 1Actual x 3 x 3

Now try p. 258 #’s 3, 4, 7

Now let’s do workbook page 43 together

Exit Ticket

Partner Discussion

When would you use scale factor in real life?

Tuesday Bell Work *show your work**have homework on desk

Triangles EFG and QRS are similar. The length of the sides of EFG are 144, 128, and 112. The length of the smallest side of QRS is 280, what is the length of the longest side of QRS? (draw a diagram and solve)

Agenda

• 1- bell work• 2- Agenda- ws• 3- Vocabulary• 4- Objective • 5- lesson *Scale Factor• 6- exit ticket

2. Interest

What does this word mean to you?

This word actually means….. the amount of money charged for borrowing or using money; or the money earned by saving money.

Examples… Explain how you would use this word in math.

Lesson

7.G.1 Solve problems involving scale drawings of geometric figures, including computing actual lengths and areas from scale drawing at a different scale.

Scale Factor

Check homework

Lesson

Complete the worksheet

Exit Ticket

Partner Discussion

Scale factor relates to similar figures and indirect measurement. How????

Wednesday Bell Work *show your work

A girl 160 cm tall, stands 360 cm from a lamp post at night. Her shadow from the light is 90 cm long. How high is the lamp post?

160 cm

90 cm 360 cm

Agenda

• 1- bell work• 2- Agenda- ws • 3- Vocabulary• 4- Objective • 5- lesson *Map Scale• 6- exit ticket

3. Gratuity

What does this word mean to you?

This word actually means…..a tip given to a waiter, taxicab driver, etc.

Examples… Explain how you would use this word in math.

Lesson

0706.1.4 use scales to read maps

Lesson

Map Scale Video

Map Scale

Now look at p. 259 #15-17

Map Scale

Complete the map scale worksheet

Exit Ticket

Partner Discussion

When would I be important to use map scale?

Thursday Bell Work *show work

A tree with a height of 4m casts a shadow 15 m long on the ground. How high is another tree that casts a shadow which is 20 m long? (draw a diagram and solve)

Agenda

• 1- bell work• 2- Agenda • 3- Vocabulary• 4- Objective • 5- lesson *N2K and review • 6- exit ticket

4. Commission

What does this word mean to you?

This word actually means…..a fee paid to an agent or employee for transacting a piece of business or performing a service; especially :  a percentage of the money received from a total paid to the agent responsible for the business.

Examples… Explain how you would use this word in math.

Lesson

7.G.1 Solve problems involving scale drawings of geometric figures, including computing actual lengths and areas from scale drawing at a different scale.

0706.1.4 use scales to read maps

N2K

CT-use percent of increase/decrease to determine the correct answer

CR- fill in all the blanks to complete the problem

Exit Ticket

Partner Discussion

What skills were needed for the N2K?

Friday Bell Work *show work

Triangles IJK and TUV are similar. The length of the sides of IJK are 40, 50, and 24. The length of the longest side of TUV is 275, what is the perimeter of TUV? (draw a diagram and solve)

Agenda

• 1- bell work• 2- Agenda • 3- Vocabulary• 4- Objective • 5- lesson *Quiz • 6- exit ticket

5. Scale Factor

What does this word mean to you?

This word actually means…..the ratio used to enlarge or reduce similar figures.

Examples… Explain how you would use this word in math.

Lesson

7.G.1 Solve problems involving scale drawings of geometric figures, including computing actual lengths and areas from scale drawing at a different scale.

0706.1.4 use scales to read maps

Lesson

On your desk have a piece of paper out and sharpened pencil.

Answer all questions on the test --- show all work and units of measure

When done- read or work on something quietly and individually

Exit Ticket

Partner Discussion

What skills did you need for the quiz?