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Easy and Fun Biology Projects You Can Do with Kids in 3rd through 5th Grades

Mar 5, 2018 12:00 AM

Science doesn’t have to be boring. Kids are inclined naturally to investigate and explore the world around them. Learning Biology and how living organisms grow and change throughout the seasons is a part of that learning process. Biology helps children to understand their world, how their bodies move, and what makes it move the way that it does.

Whether you homeschool your children or you’re a teacher in a traditional school, you will find some fun and safe activities that you can do with your class in this article. They are all hands on and engage the students. 

Does Talking to Plants Help Them Grow? – Some research suggests that plants grow better and are healthier when you talk to them than when people don’t talk to them. We have included some questions that are an excellent introduction to the lesson. Some of the questions you want the children to answer are:

1. Did the plant respond to the vocal vibrations that travel through the air?

2. Can plants sense or absorb chemicals, or odors, that other organisms give off?

3. What kind of chemicals, or odors, do people release when they communicate with each other?

These and other questions were found on the website, (

The items you will need for this project are:

· Bean/Sunflower seeds / small plants

· Potting soil

· Small plant containers, terracotta is good and inexpensive

· Plant Growth Chart

· Water

· Spoons

· Marker


1. Label the terracotta containers “Control,” “Kind Words,” and “Mean Words.”

2. Write children’s names on the pots with the marker or Sharpie.

3. Put a small amount of soil in the pot.

4. Gently place three beans in the soil. Don’t push them into the dirt.

5. Cover the seeds with more soil. Gently pat the dirt down to make it firm. Be sure to follow planting instructions for the seeds which should be on the back of the package.

6. Place the pots on a window sill, or table that will get ample sunlight.

7. Water the seeds.

8. Have kids go into a separate room with a plant and speak kindly to it. (approx. 10 minutes)

9. Then do the same with another plant and have the kids say mean words to it. (approx. 10 minutes)

10. Water the plant again and put it back on the sill.

11. Repeat steps 7-9 for each plant that you have, except the “control” plant.

12. Move the “control” plant to another room for 10 minutes, but do not let the students talk to it.

13. Have students document the growth of the seed each day on the Plant Growth Chart. (If you’re doing this project over the course of a couple of weeks, document the growth every couple of days instead).

This activity can take up to a week, but you may want to extend the experiment to 2-3 weeks to give the plants extra time to grow. The kids may see a more significant growth pattern over an extended period than just a few days. If you have a large class, you may want to divide the pupils into small groups. A variation of this experiment would be to use classical music and heavy metal music instead of using the kind/mean words.

Taste Test – Kids will love this interactive and fun project. You may want to review some vocabulary words with the kids before the experiment. The vocabulary words are olfactory receptor neurons and odor molecules. The objects you will need are:

· 4 bowls

· Blindfold (a tie or bandana would be good for this)

· Bag of jellybeans

· Poster board to record the results


1. Separate jelly beans according to the 4 flavors you chose. Some suggestions are lemon, apple, watermelon, cherry, grape, and coconut.

2. Blindfold your pupils as they come up one at a time to try the jellybeans

3. Have your students hold their nose as they try the jelly beans, one of each flavor

4. Write down their guess.

5. Repeat steps 2-4 until all of the students have tried the jellybeans.

6. Create a bar graph according to how many jellybeans were guessed correctly.

You may want to end the project with the following question - Does the sense of smell affect your sense of taste? If so, how?

Discovering Microscopic Life – Life is everywhere and all around us, even if we can’t see it. If teachers can bring this experience to their students and help them understand it, the world would be a more exciting place for them. Here are some discussion questions that will help you lead into the lesson:

1. Can you name a one-celled animal?

2. How are plants and animals different?

3. Can you give an example of a multi-celled animal?

4. What is life?

For this project, you will need the following items:

· Small amount of grass

· Plastic bag

· Water

· Eyedropper

· Tweezers

· Glass slides

· Thin plastic cover for the wet mount

· Microscope

· Beaker, glass jar, or clear plastic cup


1. Take a walk outside and gather some grass with bits of soil on it.

2. Place the grass into the plastic bag until you get inside.

3. Put the grass in the beaker and cover it with water.

4. Set aside for 5-7 days.

5. Using the eyedropper, draw a sample of water nearest the blades of grass.

6. Carefully make a wet slide and view the sample under the microscope.

7. Have the kids identify and describe what they see.

Some of the students can describe what they saw in writing, or by drawing a picture. These additional activities will not only help you to meet the CCCS but more importantly will reinforce the lesson to your students.

School and science are hard, but it doesn’t have to be boring. There are many different ways to bring Biology or any of the other sciences to life for your class. Having the class participate gives the lesson meaning and makes it memorable for your students. 

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