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Ultimate Gross Science


Explore extremely gross science with over 12 really yucky scientific experiments.

Skill Development:

Ease of Use:
Age: 7 – 9 years

Read our expert reviews →

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The Ultimate Gross Science set from John Adams, will help children to explore and understand how the human body functions.

Learn how farts are produced and make a bouncing poo! Understand digestion and how your bladder pees; experiment with slime and make your own disgusting pus ball; make fake blood and see it congeal; plus create a vomiting skull and much more!

Comes with clear instructions about how to conduct the experiments at home, as well as the method and science behind what you’re doing. Please note that some activities require additional household ingredients and objects (not included): apple juice, sugar, tomato ketchup, brown bread, sweetcorn, cola, ladies tights, rubber band.

What our testers said

“I want to make more eyes! Really cool how the powder changes to gel when you put it in the water.” – Boy aged 7

“I like the sneeze balloon experiment as I didn’t know how far my sneeze droplets travel.” – Boy aged 8

What our experts think

Gross Science is a great way to engage children in hands-on learning all about the body and its biological processes. The step by step instructions are clear and provide facts which help to develop children’s knowledge and understanding of what they are observing. Adult assistance is needed at times, for example, to ensure the correct measurements are mixed up.

Messy play is often the most fun and our testers found the set very interactive and engaging. They also found that it fostered an interest in science learning, as the children wanted to learn more about germs and blood types after completing some of the experiments.

Skills developed

– Develops understanding and knowledge of processes in the human body
– Encourages use of scientific vocabulary
– Promotes observation skills

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