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Crazy for Color

Take a trip inside the Crayola crayon factory!

By Jessica McKenna-Ratjen
From the May/June 2023 Issue

Learning Objective: Students will plot fractions on number lines related to Crayola crayon colors.

Lexile: 840L; 630L
pigment

A substance that gives color to other materials

Fractions

Numbers that stand for part of a whole. Fractions are typically written in the form “1/8.” This fraction is pronounced “one-eighth.”

Example: If an apple is cut into 4 equal slices, and you eat 1 slice, you have eaten 1/4 of an apple.

denominator

The bottom part of a fraction. It tells us the total number of equal pieces or things.

Example: If an apple is cut into 4 equal slices, the denominator is 4 because 4 pieces make up the whole apple.

numerator

The top part of a fraction. It tells us how many equal parts of the whole you have.

Example: If an apple is cut into 4 equal slices and you eat 1, the numerator for how many slices are eaten is 1 because it is 1 out of the 4 pieces that make up the whole apple.

Bryan Derballa 

STORE IT: Each of the factory’s 8 silos holds 136,000 gallons of wax!

Macaroni and cheese, periwinkle, jungle green. Crayola crayons come in every color of the rainbow. The company makes 120 different colors of crayons—and it makes a lot of them!

The Crayola factory in Easton, Pennsylvania, opened in 1903. Today it produces around 12 million crayons each day. That’s nearly 3 billion crayons per year!

Macaroni and cheese. Periwinkle. Jungle green. Crayola crayons come in every color of the rainbow. The company makes 120 different colors of crayons. And it makes a lot of them!

The Crayola factory in Easton, Pennsylvania, opened in 1903. Today it produces around 12 million crayons each day. That’s nearly 3 billion crayons per year!

Bryan Derballa

MIX IT: A worker adds red pigment to vats of melted wax.

It takes a lot of wax to make all those crayons. The wax that they use is naturally clear. So after they melt the wax, crayon makers mix it with pigment, or powdered color. Crayola’s pigments can be either human-made or come from natural sources. Many of Crayola’s brown crayons, for example, use ground up metal rust as a pigment. Rust is a substance that forms when certain metals come in contact with water.

It takes a lot of wax to make all those crayons. The wax is naturally clear. First, crayon makers melt the wax. Then they mix it with pigment. Pigment is powdered color. Some of Crayola’s pigments are human-made. Others come from natural sources. For example, many of Crayola’s brown crayons use rust as a pigment. Rust forms when some metals come in contact with water.

Bryan Derballa

MOLD IT: Colored wax is poured into molds, where it hardens into crayon shapes.

Next, the warm, colored wax is poured into small molds in the shape of crayons. The wax hardens after a few minutes. Then each crayon is wrapped twice in paper labels.

Next, the warm, colored wax is poured into small molds. The molds are shaped like crayons. The wax hardens after a few minutes. Then each crayon is wrapped twice in paper labels.

Bryan Derballa

 LABEL IT: Each crayon is double-wrapped in labels printed on-site.

The factory produces the rainbow colors of red, orange, yellow, green, blue, and violet most frequently, along with brown and black. According to one major poll, blue is the most popular color. In fact, six shades of blue made the top 10 list.

The factory produces the colors red, orange, yellow, green, blue, violet, brown, and black most frequently. According to one major poll, blue is the most popular color. In fact, six shades of blue made the top 10 list.

Bryan Derballa

BOX IT: Finished crayons are sorted into boxes.

Crayola is no ordinary place to work. “We call ourselves Crayolians,” says Crayola employee Eric Zebley. The walls of the offices are painted in Crayola’s signature bright colors, he says. This reminds employees that they’re making crayons for the most colorful customers of all: kids like you!

Crayola is a special place to work. “We call ourselves Crayolians,” says Eric Zebley. He works at Crayola. The walls of the offices are painted in Crayola’s signature bright colors, he says. This reminds employees that they’re making crayons for the most colorful customers of all: kids like you!

Now You Try It

Answer the questions below.

Answer the questions below.

Of the total 120 crayon colors Crayola creates, 1/3 are shades of blue. Plot this fraction on the number line below.

Of the total 120 crayon colors Crayola creates, 1/3 are shades of blue. Plot this fraction on the number line below.

Number line from 0, 1/3, 2/3, and 1

A. In Crayola’s 6-pack of metallic crayons, 5 of the crayons are not shades of pink. Write a fraction to represent the number of crayons that are not pink.

B. Plot this fraction on a number line.

A. In Crayola’s 6-pack of metallic crayons, 5 of the crayons are not shades of pink. Write a fraction to represent the number of crayons that are not pink.

B. Plot this fraction on a number line.

In a pack of 8 neon crayons, 3 crayons are named after fruits, such as laser lemon. Plot a fraction that represents the number of crayons with fruit names on a number line. 

In a pack of 8 neon crayons, 3 crayons are named after fruits, such as laser lemon. Plot a fraction that represents the number of crayons with fruit names on a number line. 

A pack of 5 gel crayons includes the3 primary colors: red, blue, and yellow. Write a fraction that represents the number of crayons in the pack that are NOT primary colors. Then draw a number line and mark your fraction.

A pack of 5 gel crayons includes the3 primary colors: red, blue, and yellow. Write a fraction that represents the number of crayons in the pack that are NOT primary colors. Then draw a number line and mark your fraction.

video (2)
video (2)
Activities (6)
Answer Key (1)
Step-by-Step Lesson Plan

1. SPARK ENGAGEMENT.

Play the video "Making Crayons." Then, before or after reading the article, spark a discussion based on the following questions.

  • What is your favorite thing to draw?
  • What kind of skills might a crayon maker need?
  • How could you use fractions to describe a pack of crayons?

2. INTRODUCE THE MATH CONCEPT AND VOCABULARY.

  • Draw a rectangle and divide it into 3 equal parts. Then shade in one. How many parts does this rectangle have? (3) How many parts are shaded? (1)
  • This rectangle is a fraction model. It shows a whole divided into equal parts. In this model, 1 out of 3 parts are shaded. What fraction does the shaded part represent? (1/3)
  • Draw a number line with 4 intervals. Mark the first interval 0 and the last interval 1. A number line is another way to model fractions. Where could we mark the fraction 1/3 on this number line? (at the first unlabeled line) Why? (Because it marks the first part of 3 equal parts on the line.)
  • Today we will be plotting fractions on a number line.
  • Play the math video "Fractions."

3. WORK THROUGH THE "WHAT TO DO" BOX.

  • How many equal parts was the number line in the example broken into? (4) Why? (to represent the total number of crayons and the denominator of the fraction)
  • How was the fraction 3/4 modeled on the number line? (A red dot was drawn on the line labeled 3/4.)
  • Why is it important to label the numbers 0 and 1 on a fraction number line? (It reminds us that the numbers between them are parts of a whole.)

4. REINFORCE WITH MATH PRACTICE.

  • Have students complete questions 1 through 4 on page 7.

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