Lesson Plans - Grade 8 Math

1-10-2000
1. HW P209 Even.....2. Divisibility Ex..3. .................
4. .................5. .................6. .................

OBJECTIVE: Use divisibility rules for 2, 3, 4, 5, 6, 8, 9, and 10. (6-1, Pp212ff) ACTIVITIES: Each student will make up a list of five numbers(2-4 digits) and exchange with another student Students are to use the information provided on page 212 (divisibility rules) and determine fi the numbers are divisible by 2, 3, 4, 5, 6, 8, 9, and 10. NOTES:DP1 When the digits of this two-digit number are added they give a sum that is half as large as the product of multiplying the two digits. What is the mystery number? List your choices. HOMEWORK: Make up a rule and show some test problems to determine if a number is divisible by 7.

1-11-2000
1. HW ö7 rule.......2. Factor Trees.....3. .................
4. .................5. .................6. .................

OBJECTIVE: Find the prime factorization of a composite number (6-2, Pp215ff) ACTIVITIES: REVIEW factor trees, prime numbers, factors, and composite numbers. INCLUDE INFORMATION ON NEGATIVE NUMBER FACTORS (i.e. x-1) Possible factor trees competition. NOTES:DP2 A car and a motorcycle are traveling in opposite directions at 60 miles per hour. How far apart will they be seven minutes after they pass each other? HOMEWORK: P217 25-28 [Prime Factor Calculator!]

1-12-2000
1. HWP217 25-28.....2. Factor List......3. .................
4. .................5. .................6. .................

OBJECTIVE: Problems solving (list making and/or other) ACTIVITIES: for the numbers 26-50, tell which numbers have 2, 3, 4, or 5 factors. Show the factors. NOTES:DP6 Using only the number 3 and any combination of the four basic operations (+ - x ö) write equations for the numbers from 1 TO 10. HOMEWORK: Describe COMMON FACTORS in your own words; include greatest common factor (research from the text!!!) (Factor Trees)

1-13-2000
1. HW CF Definition.2. .................3. .................
4. .................5. .................6. .................

OBJECTIVE: ACTIVITIES: NOTES:DP7 At Hula's Pizza Parlor, Jenn and her friends bought four large pizza for a total cost of $66.10. One pizza had 1 topping, one had 2, one had 3 and the last had 4. What is the price of each topping? If each topping is the same price, what are the prices of each pizza? HOMEWORK: P596 lesson 6-4, 1-22

1-14-2000
1. HW596(6-4)1-22...2. Define Rat.Num...3. .................
4. .................5. .................6. .................

OBJECTIVE: Identify and simplify rational numbers (6-5, pp224ff) ACTIVITIES: Introduce the term rational (inclusive RATIO) and relate to the most common form (fraction) Place emphasis on the definition of what CAN be as opposed to what MIGHT be (i.e., can be changed to a fraction form) NOTES:DP9 Find the smallest natural number divisible by 5 and 7 which when divided by 9 leaves a remainder of 6. HOMEWORK: P225 1-4 NOTICE: The Problem of the Week will be due on MONDAYs

Happy New Year!

I want to know why the puzzle always results in the same sum. Can you explain how the grid is designed so that the sum is a constant?

Directions for the puzzle:

1. Choose a number. Circle it. Cross out all of the numbers in the same row and same column as the number you chose.
2. Choose a number that is not circled or crossed-out. Circle it. Cross out all the numbers in the same row and the same column as the number you chose.
3. Continue the same process of circling and crossing out numbers until there is only one number left. Circle it.
4. Add the six circled numbers.
5. Repeat the process choosing different numbers. Compare your answers.