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All Mixed Up!: Separating Mixtures
Source Institutions
Visitors separate a mixture of pebbles, salt crystals, and wood shavings by adding water and pouring the mixture through a strainer.
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Gel Electrophoresis of Dyes
Source Institutions
In this experiment related to plant biotechnology, learners discover how to prepare and load an electrophoresis gel.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-530.jpg?itok=7oeZJrg8)
Paperfolding Polyhedrons
Source Institutions
In this activity (on pages 55-66 of PDF), learners fold paper into origami shapes and then combine several identical shapes into a three-dimensional structure.
Shrinkers
Source Institutions
Visitors use heat to shrink samples of polystyrene. They compare samples from containers that were shaped in different ways during manufacturing.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-754.jpg?itok=T0XsD48R)
Laser Projection Microscope
Source Institutions
In this activity, learners use a laser pointer to project a microscopic image of a liquid sample suspended from the tip of a syringe.
Concentrate: Concentrations and Reaction Rates
Source Institutions
Visitors incrementally increase the amount of iodate in three different test tubes containing the same amount of a starch solution.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-010.gif?itok=QeOVLkZQ)
Magic Inks
Source Institutions
Learners write their initials by applying different clear "magic ink" solutions to separate pieces of paper and then "develop" the inks with other clear solutions.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-011.jpg?itok=qhSefzsQ)
Thar She Glows!
Source Institutions
Learners observe glow-in-the-dark objects in a homemade light-proof box. Objects can include glow sticks, glow-in-the-dark toys, and toys with fluorescent paint.
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Starch Breakdown
Source Institutions
Learners use Benedict’s solution and heat to test for the presence of simple sugars in glucose, sucrose, starch, and starch combined with amylase.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-012.gif?itok=UdFRSD_c)
Flubber
Source Institutions
Learners experiment with a piece of Silly Putty® by stretching, bouncing, and snapping it. They then create flubber, a similar substance, by mixing diluted glue and a solution of sodium borate.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-602.png?itok=kUtNopFB)
Creating a Local Field Guide
Source Institutions
In this activity, learners survey living organisms near where they live or go to school, and create a local field guide.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-013.jpg?itok=Vseq_6rO)
Electroplating
Source Institutions
In this activity, learners electrically plate zinc onto brass objects.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-065.jpg?itok=ermf88Fy)
Jelly Beads
Source Institutions
Learners add drops of alginate solution to a solution of calcium chloride. The alginate does not mix with the calcium chloride, but forms soft gel beads.