6 Science Experiments for The Dot by Peter Reynolds
Turn a simple dot into a science discovery!
These six science experiments for The Dot by Peter Reynolds connect reading with hands-on investigations for kindergarten through fifth grade. From colorful coffee filters to balloon hovercrafts, each activity encourages students to ask questions, make predictions, and explore.
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Start by reading The Dot and discussing how Vashti builds confidence by trying something new.
Then, invite your students to bring that same curiosity to science! These activities are a fun addition to your Dot Day celebration or a read-aloud STEM lesson throughout the year.
1. Sink or Float
Suggested Grade: Kindergarten
Will a round object sink or float? Students investigate this question by testing objects such as buttons, coins, small balls, and marbles in clear cups of water. Before testing, they predict what will happen and then record their observations with pictures or words.
This Dot Day science experiment introduces students to making predictions, observing, and comparing results. It also provides an opportunity to explore circles and spheres while discovering that round objects don’t all behave the same way in water!
2. Coffee Filter Chromatography
Suggested Grade: First Grade
What colors are hiding inside a marker? Students draw circular designs on coffee filters using black and purple water-soluble markers. They fold the filters into cones, place the tips in a small amount of water, and watch as the water moves through the paper and separates the ink into different colors.
This colorful experiment combines science and art while introducing chromatography—the process of separating parts of a mixture. Students compare their predictions with the colors they observe and discover that even a simple dot can hold a surprise!
3. Hoop Flyers
Suggested Grade: Second Grade
Can paper circles help a straw fly? Students build three hoop flyers: one with two large hoops, one with two small hoops, and one with a large hoop and a small hoop. They predict which design will travel farthest before putting their ideas to the test.
Students launch each flyer three times, measure the distance, and record their results. This activity connects Dot Day with flight, measurement, and design while encouraging students to use evidence to compare their creations.
4. Floating Ping-Pong Ball
Suggested Grade: Third Grade
Turn a ping-pong ball into a floating dot! Using a bendy straw and a paper cone, students investigate what happens when they blow air beneath the ball. They observe how its movement changes when they blow harder or softer.
This investigation introduces airflow and air pressure through a lesson on Bernoulli’s principle. Students make predictions, record what happens, and compare their observations. Like Vashti, they practice trying something unfamiliar and learning through exploration.
5. Wrecking Ball
Suggested Grade: Fourth Grade
How does a wrecking ball’s release height affect the number of blocks it knocks over? Students use a ball suspended from string and a support made with paper towel rolls and a ruler to investigate. They release the ball from different heights and count how many blocks fall.
By repeating each test and recording their results, students explore motion, collisions, and the importance of fair testing. Keep the ball, string length, and block arrangement the same so students can focus on how release height affects the outcome.
6. Balloon Hovercraft
Suggested Grade: Fifth Grade
Make a dot that glides! Students build a small hovercraft using a CD or DVD, a balloon, and a prepared bottle cap. As air escapes from the balloon beneath the disc, it creates a cushion of air that reduces friction and helps the hovercraft slide across a surface.
Students test their hovercrafts on smooth and rough surfaces, measure how far they travel, and compare their results. This Dot Day STEM activity gives students a hands-on way to investigate air pressure and friction while practicing observation and problem-solving.
Each experiment gives students a chance to approach science with the curiosity Vashti brings to her artwork. Encourage them to share what surprised them, explain what their results show, and suggest something they would like to test next. One little dot can be the beginning of a big discovery!
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