Frequently Purchased Together
- Large specimen jar filled with growing body parts
- Each starts out about 5 cm (2 in) in length & grows to human proportions… or a little bigger in 7 days
An Essential Piece for any Young Scientist Lab!
Anatomy science toy for kids
Every amazing scientist has strange specimens floating in a jar, filled with murky liquid. What about a brain, hand, foot or even ear! The best part of all is that these body parts start off small and get bigger the longer they stay in the water until they reach their maximum size.
How big do they grow?
Each body part starts out about 5 cm (2 in) in length and grows to human proportions… or a little bigger. The body parts should reach their maximum size after 7 days of “pickling” in water. You’ll also receive a one gallon size wide-mouth specimen lab jar made out of clear plastic – perfect to hold your young scientist body parts.
How does it work?
Growing body parts are made using two different polymers: a hydrophilic superabsorbent polymer and a hydrophobic polymer. The hydrophilic polymer is a super absorber and is similar to the polymer found in baby diapers.
A Perfect Science Gift!
Steve Spangler’s Growing Body Parts Jar is the perfect gift for that “special” someone who has everything – give them a “hand”, lend them a “brain”.
These Polymers Can Absorb as Much as 250 Times Their Weight in Plain Water
The hydrophobic polymer does not absorb water at all. This polymer holds the shape of the part while it absorbs water (stretches) and as it loses water (shrinks) through evaporation. It also acts as a “skin” to keep the part from turning into powder as it dries.
Comes With an Activity Guide
The kit includes an Activity Guide with a detailed explanation of how the growing body parts work… just in case you’re feeling the need to teach some ghoulish science.
- 1 brain, 1 hand, 1 nose, 1 ear & 1 foot
- One 1/2 Gallon (1.89 L) size clear plastic jar with sealable lid (to keep your creepy things inside)
- Activity Guide