CS: Patterns and Sequences: The Basics of Algorithms Worksheet

Question 1

Look at the pattern: red, blue, red, blue, red, __. Write the color that comes next.

Accepted Answer

The next color is blue because the pattern repeats red, blue.

Question 2

Look at the pattern: star, star, heart, star, star, heart, __. Draw or write what comes next.

Accepted Answer

The next shape is a star because the repeating pattern is star, star, heart.

Question 3

Finish the number sequence: 1, 2, 3, 4, __.

Accepted Answer

The next number is 5 because the numbers count up by 1.

Question 4

A robot follows these steps: step forward, clap, step forward, clap. Write the next step.

Accepted Answer

The next step is step forward because the steps repeat step forward, clap.

Question 5

Put these morning steps in order by writing 1, 2, and 3: put on shoes, wake up, brush teeth.

Accepted Answer

A good order is 1 wake up, 2 brush teeth, and 3 put on shoes.

Question 6

Look at the pattern: circle, square, triangle, circle, square, __. Draw or write the missing shape.

Accepted Answer

The missing shape is triangle because the pattern repeats circle, square, triangle.

Question 7

An algorithm is a list of steps. Write one step you would do to wash your hands.

Accepted Answer

One step could be turn on the water, because washing hands follows steps in order.

Question 8

Find the mistake in this pattern: up, down, up, down, down. Write the word that should replace the last down.

Accepted Answer

The last word should be up because the pattern repeats up, down.

Question 9

Look at the picture pattern: apple, banana, apple, banana, __. Draw or write what comes next.

Accepted Answer

The next item is apple because the pattern repeats apple, banana.

Question 10

A robot needs to get to the star. The steps are move right, move right, move up. Draw arrows or write the steps in order.

Accepted Answer

The steps are right, right, up. The robot follows them in that order to reach the star.

Question 11

Finish the action pattern: clap, tap, tap, clap, tap, tap, __.

Accepted Answer

The next action is clap because the pattern repeats clap, tap, tap.

Question 12

Choose the better algorithm for making a sandwich. A: eat sandwich, put bread on plate, add filling. B: put bread on plate, add filling, eat sandwich. Write A or B and tell why.

Accepted Answer

B is the better algorithm because the steps are in the correct order: put bread on the plate, add filling, and then eat the sandwich.

Question 13

Look at the size pattern: small, big, small, big, small, __. Write the size that comes next.

Accepted Answer

The next size is big because the pattern repeats small, big.

Question 14

A bug is on a leaf. It jumps forward 1 space, then forward 1 space, then back 1 space. If it repeats, write the next jump after back 1 space.

Accepted Answer

The next jump is forward 1 space because the repeating steps are forward, forward, back.

Question 15

Create your own repeating pattern using two colors or two shapes. Write or draw at least 5 items in your pattern.

Accepted Answer

One correct answer could be red, blue, red, blue, red. It is a repeating pattern because red and blue repeat in the same order.

CS: Patterns and Sequences: The Basics of Algorithms

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