A focused Grade 4 learning session for Measurement Units and Conversions using visual models, worked examples, strategy guidance, and a short mastery check.
Student goal: I can convert a measurement from a larger unit to a smaller unit.
Measurement Units and Conversions means choosing a model, naming what each number means, and explaining the strategy.
Question: Based on the ruler, what is the length of the red line in millimeters?
Why it works: The red line spans from \(2\) cm to \(8\) cm. The length is \(8 - 2 = 6\) cm. Convert to millimeters: \(6 \times 10 = 60\) mm. The answer is \(\mathbf{60}\) mm.
Answer: \(60\) mm
Question: A scale shows that a dog weighs \(12\) kilograms. How many grams does the dog weigh?
Answer: \(12{,}000\) g
Question: Complete the conversion table. If \(2\) feet \(=\) ? inches and \(1\) foot \(=12\) inches, what is the correct value?
| Feet | Inches |
|---|---|
| \(2\) | ? |
| \(5\) | ? |
| \(7\) | ? |
Answer: \(24\) inches
Question: A soccer field is \(100\) yards long. How many feet is this?
Why it works: Since \(1\) yard \(= 3\) feet, multiply: \(100 \times 3 = 300\) feet. The answer is \(\mathbf{300}\) feet.
Answer: \(300\)
Measurement Units and Conversions becomes easier when students connect the question to a model, use clear steps, and explain why the answer fits.
Understand the model before choosing the operation.
Use scratch paper. The explanation matters more than simply seeing whether the choice is correct.
How many centimeters are in \(3\) meters?
Answer B: \(300\)
Since \(1\) meter \(= 100\) centimeters, multiply: \(3 \times 100 = 300\) cm. The answer is \(\mathbf{300}\) cm.
Maya measured her pencil and found it is \(15\) centimeters long. How many millimeters is this?
Answer C: \(150\)
Since \(1\) centimeter \(= 10\) millimeters, multiply: \(15 \times 10 = 150\) mm. The answer is \(\mathbf{150}\) mm.
A soccer field is \(100\) yards long. How many feet is this?
Answer C: \(300\)
Since \(1\) yard \(= 3\) feet, multiply: \(100 \times 3 = 300\) feet. The answer is \(\mathbf{300}\) feet.
Diego's dog weighs \(48\) pounds. How many ounces does the dog weigh?
Answer D: \(768\)
Since \(1\) pound \(= 16\) ounces, multiply: \(48 \times 16 = 768\) ounces. The answer is \(\mathbf{768}\) ounces.
A juice bottle contains \(2\) liters of juice. How many milliliters is this?
Answer C: \(2{,}000\)
Since \(1\) liter \(= 1{,}000\) milliliters, multiply: \(2 \times 1{,}000 = 2{,}000\) mL. The answer is \(\mathbf{2{,}000}\) mL.
Ava wants to convert \(5\) kilometers to meters. What is the correct answer?
Answer B: \(5{,}000\)
Since \(1\) kilometer \(= 1{,}000\) meters, multiply: \(5 \times 1{,}000 = 5{,}000\) m. The answer is \(\mathbf{5{,}000}\) m.
Sam has \(4\) feet of ribbon. How many inches of ribbon does he have?
Answer D: \(48\)
Since \(1\) foot \(= 12\) inches, multiply: \(4 \times 12 = 48\) inches. The answer is \(\mathbf{48}\) inches.
A bathtub contains \(120\) fluid ounces of water. How many cups is this?
Answer A: \(15\)
Since \(1\) cup \(= 8\) fluid ounces, divide: \(120 \div 8 = 15\) cups. The answer is \(\mathbf{15}\) cups.
Ming walks \(2\) miles to school. How many yards is this?
Answer C: \(3{,}520\)
Since \(1\) mile \(= 1{,}760\) yards, multiply: \(2 \times 1{,}760 = 3{,}520\) yards. The answer is \(\mathbf{3{,}520}\) yards.
A recipe calls for \(8\) ounces of chocolate. How many pounds is this?
Answer A: \(\frac{1}{2}\)
Since \(1\) pound \(= 16\) ounces, divide: \(8 \div 16 = \frac{1}{2}\) pound. The answer is \(\mathbf{\frac{1}{2}}\) pound.
Noah's classroom aquarium holds \(36\) quarts of water. How many gallons is this?
Answer B: \(9\)
Since \(1\) gallon \(= 4\) quarts, divide: \(36 \div 4 = 9\) gallons. The answer is \(\mathbf{9}\) gallons.
