Eight-sided die with 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 1. 16mm
Ideas for Use
Simple Ideas
Have a student roll two eighths dice and tell which fraction is greater. The > side of a six function dice can be used if desired.
Intermediate Idea
Have students add and subtract the eighths dice. While these dice have been reduced, the student will know which denominator to use making the conversions easier.
Advanced Ideas
Combine fractions dice with differing denominators. Have students add, subtract, multiply, or divide them. You can include an operation die to randomize the problems.
Skill Drill #1
Dice needed: 2 fraction dice, 1 six-function die
1. Place the function die > side up. 2. Roll the other two dice and arrange correctly. 3. If the dice are equivalent, rotate the function die to show =.
Note: This drill is the easiest when playing with two tenths dice. It is slightly harder when playing with two sixths or two eighths dice. It is most difficult when playing with dice with different denominators such and tenths and eighths.
Skill Drill #2
Dice needed: 2 fraction dice 1 two-function or 1 six-function die
1. Roll all three dice and solve the problem shown. 2. If the = comes up on the function die and the fractions are not equivalent, roll the function die again.
Note: See the note for Skill Drill #1.
Difficult Ideas
1. Combine two fractions dice with different denominators and the addition/subtraction function die. Have the student roll the dice. Do not allow the student to rearrange the dice on subtraction problems. Leaving the dice as they were rolled will generate occasional negative answers.
2. Use two numbered dice, two fraction dice, and an operator die.
Roll all the dice and do the problem.
Example: 5 7/8 + 8 3/8 =
3. For a real challenge, these dice can be combined with decimal dice and a six function die. Then students never know what type of conversions they will have to do.
