Learners view a demonstration of how groundwater flows and define several related vocabulary terms. They complete a worksheet, participate in discussion and make a poster.

Students explore solid waste and its effects on the environment. They explain some of the major problems caused by waste disposal and the use of landfills. They suggest ways to reduce the amount of solid waste going into a landfill.

Students build their own two-cell battery and determine which electrolyte solution is best suited for making a battery. They discuss background information for their experiment, construct and test their battery, and using the chart on...

Students study the main methods to measure earthquakes; the Richter Scale and Mercalli Scale. They make a model of a seismograph and investigate which structural designs are most likely to survive an earthquake.

Students induce an electrical charge on various objects, and experiment with electrical repulsion and attraction. They define related vocabulary, play Bingo and complete a take-home quiz.

Students work in groups to conduct experiments the demonstrate the differences between static and kinetic friction. They consider how friction affects us in our everyday lives, determine the effects of weight on friction and complete a...

Students investigate the three types of material stress related to rocks. They identify the three types of stress, conduct a simulation by breaking bars of soap using only their hands, and complete a worksheet.

Students explore the concepts of potential and kinetic energy by bouncing assorted balls on different surfaces and calculating the momentum for each ball. They give examples of collisions and momentum in sports and understand that...

Students study concepts of energy and energy transfer. They look at how these concepts apply to musical instruments. They study the law of conservation of energy. They use the concepts studied in the instructional activity to design a...

Students investigate how kidneys function. They discuss how a dialysis machine works, and conduct an experiment in which they filter different substances through a plastic window screen, various sizes of hardware cloth, and poultry...

Students examine Newton's three laws of motion to discover what causes it and how it changes. They conduct motion experiments by building catapults and constructing balloon rockets. Finally, they conduct peer studies correlating...

Students examine the basic concepts of radio waves and magnetic fields. They study how the AM radios are built and demonstrate the concepts of amplitude and frequency.

Students construct an interactive ozone depletion model using gumdrops and toothpicks. After analyzing the data obtained from the model, they record it on butcher paper and complete worksheets about oxygen.

Learners build and observe a simple aneroid barometer to discover changes in barometric pressure and weather forecasting. They graph changes in barometric pressure for two weeks and make weather predictions.

Middle schoolers investigate the effect of weight on normal friction or the friction due to surface roughness. They tell about the effects of contact area that occurs as a result of molecular attraction by looking at data on line graphs.

Learners engage in a discussion about what a parachute is and how it works. They create a parachute using different materials that they think will work best. The students test their designs, which will be followed by a class discussion...

Students examine the motion of pendulums and come to understand that the longer the string of the pendulum, the fewer the number of swings in a given time interval. They see that changing the weight on the pendulum does not have an...

Students investigate different methods (aeration and filtering) for removing pollutants from water. They design and build their own water filters. Students identify the pollutants in a water sample using sight and smell, explore what...

Students examine fossil fuels, nuclear and renewable fuels. They study investigate types of heat transfer such as convection, conduction, and radiation. They complete crossword puzzles based on the vocabulary. They design, construct and...

Students work with a partner, Styrofoam ball and light source to simulate the positions of the Earth, Moon and Sun at various stages during the phases of the Moon. They describe why the Moon is visible from Earth and complete a worksheet.

Students study the number of chromosomes in the body cells, sperm cells, and egg cells of humans. They define allele, and examine the difference between dominant and recessive alleles. They complete an activity with jelly beans that...

Students randomly select jelly beans that represent genes for several human traits such as tongue-rolling ability and eye color. Then, working in pairs (preferably of mixed gender), students randomly choose new pairs of jelly beans from...

Students set up and run the experiments they designed in the lesson, 'Population Growth in Yeasts,' using simple yeast-molasses cultures in test tubes. They demonstrate understanding that several environmental factors can contribute to...

Learners work to increase the intensity of a light bulb by testing batteries in series and parallel circuits. They analyze Ohm's Law, power, parallel and series circuits, and ways to measure voltage and current.