4.8.C
The Standard
solve problems that deal with measurements of length, intervals of time, liquid volumes, mass, and money using addition, subtraction, multiplication, or division as appropriate
Texas Essential Knowledge and Skills for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students solve word problems involving length, elapsed time, liquid volume, mass, and money. They choose an operation, calculate, and state the answer with the correct unit.
What Mastery Looks Like
- Students choose the correct operation and show a clear equation or model. They calculate accurately, label the answer with the correct unit, and check that it makes sense.
Common Misconceptions
- Students may choose an operation based on one word, such as “each,” without considering the situation. They may mix units, misread elapsed time, or omit units from answers.
How to Assess It
- Give this exit ticket: “A jug holds 2 liters. Five equal bottles are filled from it. How many milliliters go in each bottle?”
Lesson moves
Ways to Teach It
Set up stations with rulers, clocks, measuring cups, play money, and scales, then have pairs solve one measurement problem at each station.
Ask students to write which operation they would use to find elapsed time, total cost, and equal shares, then explain each choice.
Play Measurement Match by pairing word problem cards with operation cards, equations, and labeled answers.
Use a classroom snack order to calculate total cost, change, combined mass, drink volume, and minutes needed for preparation.
Keep exploring
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