Use equivalent fractions as a strategy to add and subtract fractions. (5.NF.A.1)
Standards for Mathematical Practice
MP2.
Reason quantitatively.
MP7.
Look for and make use of structure.
MP8.
Look for and express regularity in repeated reasoning.
This Workshop lesson provides opportunities for students to practice identifying and finding multiples of number. Students design game boards for a game where it is advantageous to find common multiples.
Content in this Lesson
Identifying and finding multiples of numbers [E2].
Finding common multiples for 2 or more numbers [E2].
Spinners.
If you do not have clear plastic spinners, students can use paper clips and pencils. Straighten one end of the paper clip and place the pencil through the curved end. Put the point of the pencil on the center of the spinner and spin the paper clip around the pencil, using the straightened end as the pointer. See Figure 1.
Figure 1:Using a paper clip and pencil as a spinner
The number of times the base is multiplied by itself. In 34 = 3 × 3 × 3 × 3 = 81, the 3 is the base and the 4 is the exponent. The 3 is multiplied by itself 4 times. (See also base.)
factor treex
A diagram that shows the prime factorization of a number.
prime factorizationx
Finding which prime numbers can be multiplied together to produce a number (e.g., the prime factorization of 12 is 2 × 2 × 3).
