Fair tests and evidence: fill in the blanks: fill-in-the-blank worksheet for Grade 4, page 1 preview

Fill-in-the-blank worksheet · Science

Fair tests and evidence: fill in the blanks · Grade 4

Read 6 sentences about fair tests and evidence and write the missing word in each, using the word bank. Practices reading for meaning and topic vocabulary.

Grade 4 · ages 9 to 10
Easy
10 to 15 minutes
1 page
Free

The answer key is a separate page for grown-ups. Sign in to download it.

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The word bank and sentences

Directions: Read each sentence. Choose the best word from the word bank and write it on the line.

Word bank: cross out each word as you use it
data ____ fair test ____ results ____ bar graph ____ variable · repeat
1 Scientists share their methods so other people can · the test.
2 Recording · in a table makes patterns easier to spot.
3 In a ____, you change only one thing and keep everything else the same.
4 Scientists repeat each test several times to make their · more reliable.
5 The one thing you change on purpose in a fair test is a ____.
6 A · helps you compare results quickly.
Your turn · Write a sentence of your own that uses a word from the word bank.

What your child practices

Your child practices reading for meaning and topic vocabulary. The skill is “Plan a fair test”: predict first, change one variable at a time, keep the others the same and compare what you observe.

Grades and ages: Grade 4, ages 9 to 10
Time: About 10 to 15 minutes
Subject: Science
Level: Easy for Grade 4
Answer key: Yes, for grown-ups who sign in
Printing: 1 page, US Letter or A4, low-ink option
Updated: October 15, 2026

How to use it

Try the first question together so the format is clear. Then let your child work through the rest, showing their thinking on the page. It is one of the easier sheets for Grade 4, good as a warm-up or a first look at the skill.

An answer key comes with it as a separate page that grown-ups download after signing in.

Tip for grown-ups: Read each sentence aloud with a hum for the blank, then try each word bank word in it.

Done on paper? A grown-up can record it on the child's page in PlayOwl; downloading alone doesn't count as finished.