All biological cells require the transport of materials across the plasma membrane into and out of the cell. By infusing cubes of agar with a pH indicator, and then soaking the treated cubes in vinegar, you can model how diffusion occurs in cells. Then, by observing cubes of different sizes, you can discover why larger cells might need extra help to transport materials.

In this seventh grade science Atmosphere and Weather Unit, students will explore the atmosphere, air and water quality, the water cycle, the greenhouse effect, global warming, climate change, and human-environment interaction through a number of experiments, interactive webquests and projects. They will be exposed to the STEM practices behind growing and agriculture in a hands-on, experiential and experimental life science growing project. They will create terrariums in two-liter soda bottles and will focus on the importance of understanding meteorology and the cycling of water and gasses in and out of the Earth and atmosphere in order to effectively plan, grow and harvest.

The Phoenix metropolitan area, like many large cities, has problems with air pollution at certain times of the year. You can do a simple experiment to determine some of the factors that affect air pollution.

This course introduces the concepts, techniques, and devices used to measure engineering properties of materials. There is an emphasis on measurement of load-deformation characteristics and failure modes of both natural and fabricated materials. Weekly experiments include data collection, data analysis, and interpretation and presentation of results.

Watch the ZOOM cast find out how many balloons filled with air and then with water are required to support the weight of a cast member.

This video explains the different part of an experiment and all the components that need to be included to be a valid test. Good for vocabulary and getting a deeper understanding of how the variable group and the control group connect. Also introduces independent and dependent variables and does a nice job of illustrating how they relate to each other.

Students will explore the different careers found in Biomanufacturing by conducting a series of experiments that mimic the day to day operations found in industry. Students will use yeast cells as the basis the labs. They will conduct microbiology-type experiments by growing some of the yeast cells on petri dishes and examining the number of cells that grow both on the plates and under the microscope. Next, students will grow yeast cells in a similar fashion to what is seen in large-scale bioreactors. They will analyze the results of the experiment by applying computer skills to create graphs and charts of their results. In addition, Students will also design a filtration apparatus that will separate the cells from the product they are producing and calculate the yield percentage. These activities can be used as part of a microbiology or biochemistry unit or as an introduction to biotechnology.

Students practice data collection by gathering data within the classroom on common causes of allergies. They examine and interpret data charts on national trends in allergies.

Electrochemistry has been undergoing significant transformations in the last few decades. It is now the province of academics interested only in measuring thermodynamic properties of solutions and of industrialists using electrolysis or manufacturing batteries, with a huge gap between them. It has become clear that these, apparently distinct subjects, alongside others, have a common ground and that they have grown towards each other, particularly as a result of research into the rates of electrochemical processes. Such evolution is due to a number of factors, and offers the possibility of carrying out reproducible, dynamic experiments under an ever-increasing variety of conditions with reliable and sensitive instrumentation. This has enabled many studies of a fundamental and applied nature, to be carried out.

This activity is an extension of the FOSS Variables Lifeboat investigation. Students choose a lifeboats variable to investigate, write up an experiment based on the variable to be tested, test the variable, and create a lifeboats investigation poster to share their results.

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Harry keeps track of the number of times he sneezes in certain locations to try to diagnose the cause of his allergy in this video segment from Cyberchase.

This is an activity where students learn about inquiry by designing an experiment on bean plants with the goal of growing the tallest plant. Students work in groups to plan the growing conditions of the control and three experimental plants. Students collect data for about three weeks and analyze their data to see if their hypothesis is correct or not. The end product can be a report presented in a number of ways.

This is a hands-on activity to show that air takes up space even though you cannot see it.The goal is to understand that gas occupies space and relate it to real situations that prove it.

This activity is based on observations of mealworms form a question and make decisions as to the design of an investagation. Students use data collected to make a conclusion to their questions.

As students are learning about substances, mixtures, and solutions, they will participate in several experiments that involve chemical reactions using regular household products. Some experiments will produce gas or create something that will grow. Students will work in groups of 2-3 students to make a car move using the result of a chemical reaction from combining two or more household substances. They will present their project to the class.

This lesson will explore the connections between magnetism in natural materials and electromagnetism. The ultimate goal will be for students to form an understanding that the source of magnetism in natural materials is moving charges. It is helpful, but not required, for the students to have some work with electricity, and other distance forces (such as gravity or the electric force). The lesson will probably take two 50-minute periods to complete. Although the video footage is brief, the activities are in depth, inquiry-based, and can take time for the students to explore. The materials are not specifically prescribed, but can include things such as bar magnets, compasses, iron filings, wire, batteries, steel bolts, coils, straws, and hot glue. The activities include drawing the magnetic fields of bar magnets and electromagnets. The activities also include making a magnet from a drinking straw and iron filings.