Read the markings
Twelve small intervals represent one cup.
Fraction Kitchen
Add and remove fractional scoops in a measuring jug with exact cup markings.
Grades 3–5 · Math
Your goal
Start with 0 cup and use fractional scoops to leave 1/2 cup in the jug.
Reduced motion is on. The controls still update the scene.
The jug holds 0 cup, or 0/12 cup. One scoop changes the amount by 1/4 cup, exactly 3/12 cup. The goal line is 1/2 cup.
The reservoir supplies or receives each full scoop. This model uses exact twelfths of a cup and blocks actions that would spill or remove more liquid than the jug contains.
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Learn with Fraction Kitchen
Fraction Kitchen turns fraction arithmetic into a measuring task for upper elementary students. A jug begins with a known amount of liquid, and a dashed line marks the desired quantity. Choose a half, third, fourth, sixth, or twelfth cup scoop, then add or remove a full scoop. The liquid level and exact fraction update together, helping learners connect unlike scoop sizes with equivalent twelfths. Nine goals include filling, reducing, and measuring amounts above one cup. Children can compare different sequences of scoops that produce the same final quantity.
What to look for
Compare scoop sizes
One third cup equals four twelfths; one half equals six twelfths.
Work backward
If the jug is too full, remove a scoop instead of resetting.
For teachers and curious learners
Add and subtract fractional quantities with a common whole. Ask students to predict what will happen, change one setting, and explain what they observe. Learn gives a starting point. Practice and Challenge offer new goals with the same scene.
Liquid amounts are exact integer twelfths of a cup in a two-cup jug. A reservoir supplies and receives scoops. Actions that would spill or remove too much liquid are blocked.