This activity is a classroom lab where students learn that cold water is denser and hot water is less dense than room temperature water. Students perform an experiment and relate to their background knowledge to make conjectures.

This activity is a classroom experiment where students participate or observe that different densities of liquids will yield different results in a sink-or-float activity.

Students explore and experiment with various objects to find which materials will float or sink. They record predictions and results, and generate ideas about the properties of materials that float or sink.

Students will explore with solids and liquids to discover what density is. Students will be involved in small group experiments and a full group experiment. Observing, predicting, exploring and discovering are all included in this lesson.

This activity is a small-group activity that makes students learn the subject matter of aqueous solutions (colloids, suspensions) and phase changes by writing a children's book. Learning by teaching.

This activity is used to introduce the different properties of states of matter, by testing an unknown substance with household materials to determine which state of matter most closely resembles the material. It also can invole data collection, reasoning, grph making, and presentation of findings.

Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. Relate the interaction potential to the forces between molecules.

This video segment from IdahoPTV's D4K explains and gives examples of the 4 states of matter: solid, liquid, gas, and plasma.

Students will statistically analyze data gathered in reference to the Abraham Lincoln penny.

Students experiment and hypothesize about surface tension and cohesion, using water, ground black pepper, liquid soap, and other household products.

Students are introduced to the similarities and differences in the behaviors of elastic solids and viscous fluids. Several types of fluid behaviors are described Bingham plastic, Newtonian, shear thinning and shear thickening along with their respective shear stress vs. rate of shearing strain diagrams. In addition, fluid material properties such as viscosity are introduced, along with the methods that engineers use to determine those physical properties.

This activity provides students with a first look at water tension and its role in the life of a water strider.

This activity provides students with a first look at water tension and its role in the life of a water strider.

This activity investigates water when it freezes and how other solid items sink or float in water.