Lesson Plan # 2

  1. (5 min)Mental Math
    1. What is 8 x 7 - 2? [54]
    2. Start with 26, add 10, then subtract 5 [31]
    3. What is .5 + .5? [1]
    4. What is 9 x 5 + 10? [55]
    5. Start with 15, subtract 3, then divide by 3 [4]

  2. (5 min) Review of selected problems from Homework # 1 (<= 3 problems)
  3. (10 min) Discussion of Decimal multiplication

    Rules:

    1. Multiply the numbers, ignoring the decimal points.
    2. Add the number of digits to the RIGHT of the decimal point in both numbers.
    3. Put the decimal point in the answer with the right number of digits to the right of the decimal point
    4. DON'T LINE UP THE DECIMAL POINTS!!

    Use these board examples:
         4.2             42.        .42         42. 
       x 1.1          x .11       x .11       x 11. 
        -----         ------       ----        ---- 
    
    
                   (Class Interaction: Get students to work 
                    some of these problems on the board)
    
  4. (Remainder of class)In-class exercise

  5. Hand out homework to students as they successfully complete the in-class exercise