This set of 40 white and 40 black streak plates is an economical option for teachers, geologists, or students, and is excellent to have on hand in an earth science classroom. Streak plates allow you to test the hardness of softness of minerals, as well as their streak color. By scratching the mineral in question against the plates, students or teachers can determine these properties by observing the quantity and hue of the residue left behind. White streak plates are intended for darker or colorful minerals, while the black streak plates are ideal for lighter-colored minerals.
Build an electromagnet, an electrical catapult, a doorbell chime, a telegraph, and more with this kit!
This high precision gyroscope will amaze you with rotational speed and ease of precision.
Find the hidden crystals when you open your own geodes from this fun set.
Perform awesome experiments using everyday materials found in any kitchen!
The LCD Digital Microscope II is a professional biological microscope at an affordable price. Up to 1600X with digital zoom!
An unconventional ball-tossing, head-catching challenge for 2 players or teams!