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Lesson Planet

How Can Nanoparticles Move from Land to Ocean?

For Teachers 9th - 12th Standards
Investigate the migration of the nanoparticle from land to water! A lab investigation asks budding scientists to simulate runoff. Testing water samples before and after the simulation leads individuals to make conclusions about pollution...
Lesson Planet

Jell-O® Waveguide and Power Loss

For Teachers 7th - 12th Standards
Jell-O® can help model the transmission of light through fiber optic cables. Young scientists use the jiggly dessert to make a waveguide to transmit a laser beam from one point to another. Their models help them learn the function of...
Lesson Planet

Making Up Nutrient Agars

For Teachers 9th - 12th
A resource rich in information—and nutrients. Learners create agars for the purpose of cell cultivation in Petri dishes. The lesson provides instructions on how to create agars for the cultivation of different microorganisms.
Lesson Planet

Nanotechnology Invention and Design: Phase Changes, Energy, and Crystals

For Teachers 9th - 12th Standards
What does it take to be considered a smart material? Learners investigate the properties of Nitinol, a smart material, through a hands-on lab activity. They examine the crystal lattice structure and the conditions required for Nitinol to...
Lesson Planet

Synthesis and Characterization of CdSe Quantum Dots

For Teachers 10th - Higher Ed Standards
Does the size of a sample change the physical properties of that substance? It turns out it can! Young scientists combine physics and chemistry to synthesize CdSe quantum dots and record their color properties. Learners should notice a...
Lesson Planet

Making a Liquid Crystal Thermometer

For Teachers 9th - Higher Ed Standards
Introduce your classes to a fourth state of matter! Liquid crystals have a colorful sheen that changes based on different physical factors. Learners use this information to create a liquid crystal thermometer where the color of the...
Lesson Planet

Small Scale Sculpting: Etch Lab

For Teachers 6th - 12th
Make works of art using a vintage yet effective etching strategy. The surface of a semiconductor chip has specific patterns formed through a process called etching. Through a lab investigation, young scholars recreate that process on a...
Lesson Planet

The Effects of Gold and Silver Nanoparticles on Brine Shrimp: A Toxicology Study

For Teachers 9th - Higher Ed Standards
Who doesn't love gold and silver? Brine shrimp, that's who! Learners conduct an experimental instructional activity to monitor the toxicity of gold and silver nanoparticles on brine shrimp. They synthesize solutions to expose the brine...
Lesson Planet

Microscale Investigations of Catalase Activity in Plant Extracts

For Teachers 9th - Higher Ed
Use indirect measurements to monitor metabolic activity in plant cells. Scholars understand that cells with a higher metabolic rate have a higher concentration of catalase enzyme. They use this information to compare metabolic rates of...
Lesson Planet

Investigating the Effect of Temperature on the Activity of Lipase

For Teachers 9th - 12th
How does temperature affect lipase activity? Young scholars conduct an experiment to collect data on the interaction of lipase at different temperatures. They add lipase to a solution of milk, sodium carbonate, and phenolphthalein and...
Lesson Planet

Investigating the Effect of Concentration of Blackcurrant Squash on Osmosis in Chipped Potatoes

For Teachers 9th - 12th Standards
Model and explore osmosis using squash and potatoes. Young scientists expose chunks of potatoes to different concentrations of a squash solution. They compare the weights of the chunks before and after exposure to the solution and use...
Lesson Planet

Observing Osmosis, Plasmolysis, and Turgor in Plant Cells

For Teachers 9th - Higher Ed Standards
Create the perfect conditions for osmosis. Young scholars use a microscope to observe plant cells exposed to distilled water or sodium chloride. They observe how osmosis creates turgid or plasmolyzed cells.
Lesson Planet

Investigating Osmosis in Chickens' Eggs

For Teachers 9th - 12th Standards
You might not be able to learn through osmosis, but you sure can observe it! Scholars observe and measure osmosis using chicken eggs. They control for multiple variables to determine which variables have an impact and how the impact...
Lesson Planet

Effect of Size on Uptake by Diffusion

For Teachers 9th - 12th Standards
Cell size is limited by the surface area to volume ratio, but why is this true? Scholars measure the surface area and volume of cubes before placing them into liquid. After a set amount of time, they measure the uptake by diffusion for...
Lesson Planet

Measuring Rate of Water Uptake by a Plant Shoot Using a Potometer

For Teachers 9th - Higher Ed Standards
How quickly does a plant transpire? Learners explore this question through measuring water uptake with a potometer. They time the movement of a bubble a set distance to understand the motion and rate of speed.
Lesson Planet

Estimating Rate of Transpiration from a Plant Cutting

For Teachers 9th - 12th Standards
How much water weight will a plant lose through transpiration? Scholars measure a plant with water then later come back and measure it again. The difference in weight might be due to transpiration, dehydration, or loss of mass, depending...
Lesson Planet

Investigating Factors Affecting the Breathing Rate of a Locust

For Teachers 9th - 12th Standards
Do animals breathe faster when given more oxygen or more carbon dioxide? Young scientists observe the respiration rates of locusts under a variety of gas concentrations to answer that very question. They collect data, analyze the...
Lesson Planet

Assessing Skin Sensitivity—Touch Discrimination

For Teachers 6th - 12th Standards
How do we distinguish between the number of things touching our skin? Scholars explore an interesting activity through an experiment. They learn that there must be an unstimulated sensory unit between two touches to distinguish them....
Lesson Planet

Assessing Skin Sensitivity—Temperature Receptors

For Teachers 6th - 12th Standards
You walk into a room and immediately notice it is cold, but how did your body recognize it? Scholars explore how their skin determines if something is hot, cold, or just right. They learn about receptors and response times through...
Lesson Planet

Assessing Human Hearing

For Teachers 6th - 12th Standards
Young scientists explore hearing through multiple experiments, demonstrations, and activities. They focus on the changes in hearing over a lifetime, how we can determine where a sound is coming from, and the ability to filter noises.
Lesson Planet

Monitoring the Body's Reaction to Stress

For Teachers 9th - Higher Ed Standards
When stressed, do you prefer the fight or flight response? Scholars observe, measure, and identify the body's response to stress using a well-researched methodology. They learn about the autonomic nervous system, hormones, and more.
Lesson Planet

Investigating Factors Affecting the Heart Rate of Daphnia

For Teachers 10th - Higher Ed Standards
What variables change heart rate? Young scientists observe the beating heart in Daphnia to understand these variables. They make changes in temperature, chemicals, and other factors as they graph the heart rates. Analysis questions help...
Lesson Planet

Measuring Respiratory Quotient

For Teachers 10th - Higher Ed Standards
How do scientists prove tiny living things respire? Young scientists build a respirometer and measure respiration rates in living creatures. By comparing the measurements of both plants and animals, they understand the similarities.
Lesson Planet

How Much Energy Is There in Food?

For Teachers 9th - 12th Standards
People associate calories with food, but what is a calorie? Young scientists measure the number of calories in samples of food to better understand the concept. They test a variety of samples, take measurements, and compare their results...