As caterpillars are to butterflies, so silkworms are to moths. They begin life as eggs, which take about 14 days to hatch into silkworm. The newly born silkworms eat continuously until, after molting 4 times, they encase themselves in a cocoon of silk produced from their salivary glands. They eventually emerge from the cocoon as fully grown adult moths. Silkworms have had an important role in many cultures, and they have been domesticated for the production of their silk which is woven into fine fabrics and goods. Silkworm cocoons were boiled, killing the silkworm in the process and making the cocoon easier to unravel and apply in the production of fabrics - the silkworm itself is often eaten.
With this educational specimen, you can see firsthand all of the stages of a life of a silkworm. The block features real-life samples of eggs, larva, pupa and adult moth. All of this is nicely presented in an acrylic block. Used as a slide under a microscope or as a hands-on specimen, this makes a fantastic addition to any science classroom.
Learn how solar cells transform light into electrical energy with this great kit!
Exciting magnet exploration for ages 8 and up!
With this kit, you can conduct 25 experiments to learn how an electric motor converts electricity into motion, and how an electric generator does just the opposite, converting motion into electricity.
Provides the power to execute all the basic electrostatic demonstrations on an energetic and dramatic scale with up to 350,000 volts!
This is a great clean heat demonstration model for the classroom setting!
This kit allows to build up to 3 different robots!