Some easy investigatory science project ideas include attempting to purify used cooking oil, making biodegradable plastic and increasing the shelf life of fruits and vegetables. An investigatory science project is any project that starts out with a question and uses the scientific method to attempt to answer that question.Continue Reading
One easy experiment is to investigate possible strategies for purifying used cooking oil. Cooking oil typically goes to waste and is not disposed of properly, but this experiment researches ideas for filtration or purification. Different processes of purification are tested on used oil samples, which are then tested against samples of fresh oil in terms of color, odor, cleanliness and viscosity.
Another easy experiment is to test different materials as effective components in a biodegradable plastic bag. Plastic bags can take up to 1,000 years to degrade completely, causing serious threats to the environment. This project attempts to find effective starches to use in a more biodegradable bag. Different starch components can be tested in terms of biodegradability, tensile strength, bendability and other properties.
Finally, examining factors that increase the shelf life of fruits and vegetables is another easy investigatory project. This experiment attempts to find a coating or other solution to more effectively maintain freshness in certain fruits or vegetables. Other experiments have focused on bananas with a Chitosan coating, but students can try different combinations of solutions, fruits and vegetables.Learn more about K-12
Some easy and fun science project ideas for fourth graders include projects such as a pizza box solar oven that demonstrates the power of solar energy and a jumping cereal project which displays the properties of static electricity. Each project uses simple household items to conduct experiments.Full Answer >
Great ideas for a sixth-grade science fair projects are found on websites for companies such as Education, Terimore and Science Buddies. These sites provide sample projects and step-by-step instructions for simple science experiments, categorized by different areas of scientific study and grade level.Full Answer >
Some good ideas for science fair projects include recording the effects of different foods on the human heart rate, observing the influence of phrasing questions differently on the answers they elicit, paper airplane engineering, coin toss probabilities and an investigation of platonic solids. Science fair projects can be conducted within virtually any branch of science, including biology, chemistry, physics, mathematics, engineering and the behavioral sciences, such as psychology or sociology.Full Answer >
One idea for a good third-grade science project is to test how smell affects taste by having 15 volunteers taste various pieces of fruit. For the first round, they'll be blindfolded, the second round they'll have their noses plugged and the third round they'll be blindfolded again.Full Answer >