It makes sense that a balloon filled with a lightweight gas such as helium would float when surrounded by heavier air. But why does filling a huge balloon with hot air also make it float? This ...

Students will be able to explain that the density of a substance has to do with how heavy it is compared to the size of the object. Students will also be able to explain that density is a ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Build literacy skills while making predictions with this sink-or-float activity. It's fun to learn about new concepts in a hands-on way. This family does just that with a sink-or-float activity you ...

Challenge children to predict whether the object will float or sinkin a trough of water using what they find in the garden. Encourage them to explore and examine each object, describing it with STEM ...

Children can investigate the behaviour of objects placed in water with these activities from Linda Thornton and Pat Brunton Water has many fascinating properties that young children love to explore, ...