Extra-cool bouncing balls can be mixed at home – in just 10 minutes, your own creations are ready. Which one will bounce the highest? With the special granulate in 6 colors and an additional 3 glow-in-the-dark colors, you can create up to 20 power balls. When the first balls lose their bounce after a few days, there’s definitely more to make! With two different molds for perfectly round and square bouncing balls, along with funny wiggly eyes, variety is brought into play. Children aged 8 to 12 will also learn about glow-in-the-dark colors in nature through exciting info texts and fun facts. A KOSMOS experiment kit to get started right away, have fun, and gather knowledge!

Which bouncing ball will bounce the highest? Who has the prettiest bouncy ball? In just ten minutes, kids can find out with this KOSMOS experiment kit! With the special granulate and various molds, 8 to 12-year-olds can mix their own round and square bouncing balls in a variety of colors. The glow-in-the-dark bouncing ball is especially cool, shining brightly in the dark. When it gets a pair of wiggly eyes, it becomes really funny. Once the first balls have dried out after a few days and lost their bounce, new ones need to be made. Luckily, the granulate in this set is enough for up to 20 power balls! Exciting info texts and fun facts explain why some colors glow in the dark and how, for example, deep-sea animals take advantage of this.