Lesson 2

Introduce Coordinates

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

TIMS Task

    1. 2
    2. 1
    3. 1
    4. 0
    1. 13/10  or 13/10
    2. 11/12
    3. 19/12  or 17/12

F. Using Benchmarks

Use fraction circle pieces, the Fraction Chart, or the Fractions on Number Lines Chart in the Student Guide Reference section.

  1. Choose the number closest to the actual sum:
    1. 7/8 + 12/13 is closest to 1/2, 1, 11/2, or 2?
    2. 4/9 + 5/8 is closest to 1/2, 3/4, 1, or 2?
    3. 8/9 − 1/12 is closest to 0, 1/2, or 1?
    4. 1/2 − 4/9 is closest to 0, 1/4, or 1/2?
  2. Solve the following problems. Estimate using benchmarks such as 1/2 to be sure your answers are reasonable.
    1. 4/5 + 1/2 =
    2. 7/12 + 1/3 =
    3. 5/5 + 3/4 =