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Watercycle
Third graders examine the natural circulation of water from oceans, lakes, and rivers to evaporation into the air, and then to condensation to produce rain falling back to the soil as components of the water cycle.
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Survival Still
Students explain how to desalinate water using solar energy. In this solar lesson students complete a lab activity and explain capillary water.
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Phase Change
Students compare the freezing temperature of two substances by conducting an experiment to freeze liquid ice cream. They vary the amount of salt used in the ice cubes during the freezing procedure to determine the change in the...
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What is Soap?
Students investigate soap, how it is made and its structure. In this soap lesson, students observe a demonstration of soap being made. Students observe the properties of soap and how soap performs in "real-life" situations like cutting...
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Effects of pH on Organic Molecules
Students investigate the effects of an acid and a base on the structure of milk protein. They observe the changes to droplets of milk when adding ammonia and lemon juice and relate the changes to old, curdled milk. An extension using...
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What Does That DNA Molecule Really Look Like???
Students extract DNA from animal liver cells. They separate, collect and describe the appearance from the extracted DNA while role playing as an intern in a city's forensics.
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Diffusion
Learners develop the concept of diffusion. In this science lesson plan, students demonstrate diffusion of molecules of matter in various states.
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How Do You Dew?
Students examine how the processes of condensation and evaporation occur. They describe the relationship between heat energy, evaporation and condensation of water on Earth. They give examples of the processes of evaporation and...
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Rate of Solvation
High schoolers test factors that may affect the rate at which sugar dissolve in water. They conduct two studies: One is to test the effect of temperature on the rate of solvation and the other is to test a factor which Students come up...
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Yum - Yum!! - The Digestion Lesson
Students explore the various components of the digestive system and learn about both the physical and chemical processes that work together to break down food into absorbable molecules.
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Activity #13 Changing The Look of Sugar
Students observe what happens when sugar is dissolved in water and when it is heated. They weigh the products after each of the two experiments on a balance scale. Pupils distinguish between physical and chemical changes. Students are...
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Chemistry of Burning
Students look into the increase of carbon dioxide in the atmosphere. In this chemistry lesson, students look at the hydrocarbon molecule through a model and see what happens when energy is released. They watch as the water vapor leaves...
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Diffusion Across a Selectively Permeable Membrane
Learners investigate how water passes through cell membranes. In this biology lesson, students differentiate osmosis and diffusion. They illustrate the movement of water in both processes.
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Kinetic Theory
Students describe how molecules of the different phases of matter move according to the Kinetic Theory. In this chemistry instructional activity, students observe and participate in teacher demos. They give real world applications of the...
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Noise Underwater
Sixth graders predict with reasoning how a sound will be heard underwater and record and communicate their findings. They listen to the difference in the way noise sounds underwater verses out of water and relate this to how whales and...
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Changes of State
Students examine molecules and the changes in energy of a system. In this energy systems instructional activity students complete a lab activity and describe changes of state.
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Make An Egg Float!
Students analyze density. In this density lesson, students experiment with floating an egg. Students discover that salt added to water changes the density of the water allowing an egg to float.
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Osmosis
Students explore diffusion and active transport. They observe the effects of eggs in vinegar and predict what will happen when eggs are placed in corn syrup with food coloring. Students complete worksheets which lead them to describe...
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Balancing Chemical Equations
Ninth graders explain how atoms and molecules form different substances during chemical reactions and how these processes require losing, gaining or sharing electrons. They correctly write chemical formulas and show how a balanced...
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Porosity
Students predict and test the porosity of sediments with particles of different sizes. They name two objects that they think has pores. Students define the term porosity and pores. They comprehend that an aquifer is the porous rock...
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Thermal Energy and Heat Unit
Students explain that heat energy in a material consists of the disordered motions of its atoms or molecules. They know and explain that transformations of energy usually transform some energy into the form of heat, which dissipates by...
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From Vibration to Sound
Students observe a series of demonstrations to illustrate wave movement. In this sound wave lesson, students witness how objects create waves when dropped in a dish of water, use a rope and slinky to produce transverse and longitudinal...
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Earth's Atmosphere and Temperature
Students explore the layers of earth's atmosphere and conduct an experiment to identify carbon dioxide. They construct models using styrofoam to represent molecules in the atmosphere's layers. To discover how sunlight efffects...
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COMPARISON OF FOUR-, SIX-, AND EIGHT-bp CUTS IN CALF THYMUS DNA
Students use this laboratory exercise, restriction enzymes to recognize a four-, six-, and eight-nucleotide sequence. Assuming that the four component nucleotides (A, C, T, G) are distributed randomly within a DNA molecule, then any...
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