Sink or float? This simple lesson has students guess the densities of different objects and place them into water to test their predictions.

Introduce your students to the scientific concept of sink or float. This hands-on experiment allows them to see which objects sink and which float. The concepts taught will be solidified with the completion of worksheets.

Help your students' reasoning skills grow with this activity that has them make educated guesses on whether or not an item will be attracted to a magnet.

This fun and interactive lesson will teach your students the scientific method to find out if something sinks or floats with a little help from Cookie Monster.

This hands-on lesson will get your students to investigate some mystery liquids, and they will have to use their observational skills to figure out what they are.

Your students will enjoy this hands on lesson where they make simple solutions and mixtures. They will have an opportunity to predict and observe solids that dissolve in water.

Walk, sleep, run, eat! We're constantly using energy, whether we're moving or not. In this lesson, students learn how their bodies are constantly converting potential energy into kinetic energy and kinetic energy back to potential energy.

In this teacher-approved lesson, students will make and play with oobleck (corn starch and water), then write about their experiments. Young scientists will have a blast seeing their oobleck mixtures seemingly come to life.

In this lesson, students will explore the life cycle of a pumpkin plant. Then they will have the chance to grow their own!

In this lesson, students will solve a design problem and practice troubleshooting as they create a list of instructions for putting together a tent.

Windmills have been around for generations to grind food and create energy. During this challenge, students will use various materials and put their engineering skills to work by creating their own windmills.

Transform the traditional egg drop experiment as you help students to engage in design thinking and develop empathy.

In this lesson, students will solve a design problem as they create a marble maze out of LEGO bricks.