3rd and 4th Grade Engineering and Science Inquiry Resources : Page 11

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Cleaning can be a chore, but not with this sudsy experiment!

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.