Here are several interesting activities you can engage your 4th graders in:

• A magnetic primer design

This project suits kids between Grades 3 to 6. The activity uses magnets to recreate a DNA sequence so that students can visualize the biological phenomenon that makes life possible.

• How does ozone affect plant growth?

An ideal project for Grades 4-6. Ozone is a gas that keeps the sun’s harmful rays from damaging life on earth. This project will investigate the impact of this gas on plant growth. So, ready your green fingers and grab your gardening tools.

• Basic geode observations

In this project, learners will observe different geodes. The goal is to find out whether the external features of the formation indicate what’s inside the geode. Once they’ve made some speculative observations, students can crack open the rock formations and reconcile their findings.

• Find out how much water you need to prepare pasta

Pasta is a favorite American dish even though it didn’t originate stateside. Still, this project will seek to determine the ideal amount of water needed to prepare a pasta dish and potentially save water and energy during cooking.

• How different soils interact with water

The interaction between soil and water greatly affects plant growth and, consequently, food production. In this experiment, learners will use clay, loam, and sand soil samples to determine how they interact with flowing water.

• The process of biodegradation

The components of soil include organic and inorganic substances. This project will investigate how the organic elements of soil break down from their original forms to make soil.

• Miniature geothermal power plant

Geothermal plants use steam to generate electricity. This experiment allows students to recreate this mechanism inside a lab with only boiling water inside a can.

• Is it possible to replace eggs?

Eggs have a significant role in multiple cuisines. They are one of the best protein sources, and you’ll be hard-pressed to find a pastry dish that doesn’t include eggs. So, what about people who are allergic to eggs? This experiment will investigate how different substitutes perform, particularly when baking.

• Investigating the forces behind a pendulum

A pendulum has existed since the dawn of most modern civilizations. These timekeeping devices have a clever operation mechanism drawn from their repeated oscillations. This experiment will seek to find out the weight difference compared to the length of the pendulum.

• The strength of arches and how eggs can become unbreakable

The structure of an egg can make it unbreakable. This is because the curved shells distribute the force pressed against them. To test this principle, students can load up books and other weighty objects on the eggs.

• The melting of comets

While you won’t be recreating a comet, learners will calculate the rate of melting of these spatial bodies. Also, the experiment aims to relate the size of a comet to its melting speed. This project suits learners in Grade 4-7.