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Fun Biology Lesson Plans and Activities for Kids

DNA ActivityDNA Extraction Activity

This simple DNA extraction lesson plan lets students try a fun DNA activity while they learn more about this important biology topic.

Students will try extracting DNA from a banana by following the simple instructions and can take the activity further with the use of a microscope. Give it a try and enjoy fun classroom science for kids.



  • Found in the shape of a double helix, DNA or deoxyribonucleic acid as it is otherwise known, provides the blueprint for various forms of life. This includes humans, monkeys and even things like bananas. Let's try a fun activity that involves extracting DNA from a banana.



  • Blend one banana together with 1 cup of water until smooth.

  • Fill tubes with around 15mls of the smooth banana and water solution, making one for each student in your class.

  • Add around 10 drops of detergent to the banana mixture in the tubes.

  • Put a lid on the tubes and gently shake them (this will break open the cells and release the DNA).

  • Carefully pour around 20 to 30mls of methylated spirits (also known as denatured alcohol) into the the banana mixture.

  • Use a straightened paperclip or similar object to fish out the gooey strands of banana DNA. Tell the students to collect them in a small tube.


After finishing:

From here the students can try looking at the DNA under a microscope. The can also try extracting DNA from other things as well.




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