Be a Playwright
16 years ago
Thursday, January 22, 2009
Wednesday, January 21, 2009
Probablity vs. Odds
Probability
number of favorable outcomes : all outcomes
Odds
number of favorable outcomes : number of unfavorable outcomes.
So in a deck of cards, you have a 12:52 (or 3: 13) probability of pulling a face card. However, the odds of pulling a face card are 12 to 40 (3 to 10).
Finish worksheet 6-4 tonight for homework. We'll finish our activity stations in class tomorrow.
number of favorable outcomes : all outcomes
Odds
number of favorable outcomes : number of unfavorable outcomes.
So in a deck of cards, you have a 12:52 (or 3: 13) probability of pulling a face card. However, the odds of pulling a face card are 12 to 40 (3 to 10).
Finish worksheet 6-4 tonight for homework. We'll finish our activity stations in class tomorrow.
Monday, January 19, 2009
Ratios to Percents
When finding the percent of a ratio, think of how we tally simple scores:
In gym class, you hit 3 out of 4 baskets.
That's 75%!
You divide 3 by 4 to equal .75.
Remember that the denominator will always divide the numerator.
Then, move the decimal two places to the right to change your answer from 0.75 to 75%.
Practice with Enrichment 6-5 tonight.
Also please answer the open response question handed out in class on a separate piece of paper.
We'll go through the scoring sheets tomorrow.
In gym class, you hit 3 out of 4 baskets.
That's 75%!
You divide 3 by 4 to equal .75.
Remember that the denominator will always divide the numerator.
Then, move the decimal two places to the right to change your answer from 0.75 to 75%.
Practice with Enrichment 6-5 tonight.
Also please answer the open response question handed out in class on a separate piece of paper.
We'll go through the scoring sheets tomorrow.
Thursday, January 15, 2009
Probability
Take home the worksheet you had last night and complete it.
Also, study for out upcoming quiz! Study guides earn you 5 points.
Also, study for out upcoming quiz! Study guides earn you 5 points.
Thursday, January 8, 2009
Similar Figures and Scale Drawings
Similar figures have the same shape, but not necessarily the same size.
We use this symbol ~ to show that figures are similar.
A scale drawing is either a reduced or enlarged drawing of an object or place. They often have a scale to show you the relation between the actual size and the scaled size. For instance 5 miles = 1 inch.
Complete 6:3 questions 1-14
We use this symbol ~ to show that figures are similar.
A scale drawing is either a reduced or enlarged drawing of an object or place. They often have a scale to show you the relation between the actual size and the scaled size. For instance 5 miles = 1 inch.
Complete 6:3 questions 1-14
Wednesday, January 7, 2009
Scale Drawing
Choose a room in your house. Measure it. Then create a scale for it (1:20?).
With the modified dimensions, create a scaled drawing of that room.
Due in class tomorrow.
With the modified dimensions, create a scaled drawing of that room.
Due in class tomorrow.
Tuesday, January 6, 2009
Proportions
A proportion is when two ratios are equal to each other.
We can check to see if a proportion is equal by checking its cross products.
3/4 = 9/12
Multiply: 3 x 12 = 9 x 4
Both sides equal 36 so this is a legitimate proportion.
As we saw in class, though, you may have to solve for a variable.
3/4 = x/12
Multiply: 3 x 12 = 4x
36 = 4x
Divide each side by 4 to get the variable alone.
9 = x
Finish 6:2 tonight. Questions 1-7; 10-15; 18.
We can check to see if a proportion is equal by checking its cross products.
3/4 = 9/12
Multiply: 3 x 12 = 9 x 4
Both sides equal 36 so this is a legitimate proportion.
As we saw in class, though, you may have to solve for a variable.
3/4 = x/12
Multiply: 3 x 12 = 4x
36 = 4x
Divide each side by 4 to get the variable alone.
9 = x
Finish 6:2 tonight. Questions 1-7; 10-15; 18.
Monday, January 5, 2009
Rates and Ratios
Review the difference between rates and ratios by completing questions 1-22 on the worksheet handed out in class today.
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