Cookie Lab Recipe Guide
Math Kitchen Series
Cookie Lab
Putting equivalent fractions to the delicious test!
Chef-in-Training:
Date:
Welcome to Chippy's Cookie Lab!
We are baking a fresh batch of Equivalent Chocolate Chip Cookies! But there's a kitchen crisis: our standard measuring cups are missing, and we only have basic individual tools. Solve the fraction puzzles below to calculate the perfect measurements for our dough.
The Ingredient Challenge
Find the equivalent fractions to discover exactly how many scoops of each ingredient you need. Show your math using fractions or visual sketches!
| Ingredient | Recipe Amount | Your Only Tool | Equivalent Equation | Scoops Needed |
|---|
| | | | |
| Brown Sugar | | | | |
| \(\frac{1}{2}\) Cup | \(\frac{1}{4}\) Cup |
\(\frac{1}{2}\) = ? \(\frac{}{4}\)
|
|
|
Chocolate Chips
| \(\frac{3}{4}\) Cup | \(\frac{1}{8}\) Cup |
\(\frac{3}{4}\) = ? \(\frac{}{8}\)
|
|
|
All-Purpose Flour
| 1 Whole Cup | \(\frac{1}{3}\) Cup |
1 Whole = ? \(\frac{}{3}\)
|
|
|
Salted Butter
| \(\frac{2}{3}\) Cup | \(\frac{1}{6}\) Cup |
\(\frac{2}{3}\) = ? \(\frac{}{6}\)
|
|
The Double-Batch Mystery
If Chef Pierre wants to double the recipe, he needs to double the amount of brown sugar. Since the single recipe needs \(\frac{1}{2}\) cup of brown sugar:
1. Doubled Fraction Equation:
\(\frac{1}{2}\) + \(\frac{1}{2}\) =
2. How many whole cups is that?
whole cup(s)
Unit: Equivalent Fractions & Measurements Page 1 of 2
Measuring Station
Mastering fraction models with kitchen tools
Hands-On Lab Page
1
Comparing Measuring Cups
Color in the measuring cups below to show the fractional levels, then fill in the missing numbers to make the equations true!
Fill to \(\frac{1}{2}\) Cup
1/2
Needs ______ \(\frac{1}{4}\) cups
Fill to \(\frac{3}{4}\) Cup
3/4
Needs ______ \(\frac{1}{8}\) cups
Fill to \(\frac{2}{3}\) Cup
2/3
Needs ______ \(\frac{1}{6}\) cups
2
Cookie Partitioning Practice
Imagine these are freshly baked sugar cookies. Use a pencil and straightedge to partition (divide) each cookie into equal fractional parts, then color the specified amount.
Cookie A: Halves
Partition into 2 parts.
Shade \(\frac{1}{2}\).
Cookie B: Fourths
Partition into 4 parts.
Shade \(\frac{2}{4}\).
Cookie C: Eighths
Partition into 8 parts.
Shade \(\frac{4}{8}\).
💡 Equivalent Observation: Look closely at Cookie A, Cookie B, and Cookie C. What do you notice about the sizes of the shaded areas? Fill in the equivalent equation:
\(\frac{1}{2}\) = \(\frac{2}{4}\) = \(\frac{?}{8}\) ? = ______
3
Chef Pierre's Kitchen Conundrum
Chef Pierre needs to measure exactly \(\frac{2}{3}\) cup of milk. However, his \(\frac{1}{3}\) measuring cup is dirty! Explain in words or math diagrams how Pierre could use a \(\frac{1}{6}\) measuring cup to get the exact same amount of milk.
Show work or write here:
Unit: Equivalent Fractions & Measurements Page 2 of 2
