Fruit Battery Science Experiment Kit with Instruction, Potato Science Educational Kit for School Sciences Project, Kids DIY STEM Lab Experiments

Bought this for my daughter as a Christmas present. She loves it. The excitement it brings her to make a circuit herself and make things function is awesome.

Perfect, engaging Christmas gift. Great quality and is exactly as it was described.

None of the bulbs worked, nor the fan. But the noise maker and the clock both worked! Maybe the fan didn't work bc it required more voltage, and if so it would've been nice if they included a lower powered fan. That would've been fun for my boy to watch. It was a great experiment though! Easy to assemble and use. I would've liked more wires to test more potatoes, but this kit was sufficient enough!

So far very pleased especially in variety of gears & pulleys... Worm gear, Right angle combos, 2x2mm shafts, I've checked 1 of each major item and a couple of quick combos of gears etc all in good working order. With a little imagination and some work anyone could build no end of projects. Incandescent bulbs are 2.5 volt 0.3 amp =0.75 watts... Works fine with 2xAAs Updates later possibly...happying experimenting\inventing etc...

This is one of nine different sets of electrical educational kits that are sold as different "styles" with reviews that are apparently grouped together as if they were all the same product. I am writing only about the set of 6 motors, motor mounts and propellers. Very little power is required. A single 1.5 V L44 button cell was sufficient to power a motor with an attached propeller. The propeller/fan blade takes some force to push onto the shaft and stays securely on. Attaching the positive terminal of the battery to the read lead and negative to black, results is CCW rotation and proper fan airflow from the motor through the propeller. If the leads of two motors are connected red to black, a strong puf of air by mouth will cause the propeller receiving the air to turn the attached shaft thus generating enough electrical power to turn the other mootor. If the leads of a motor are connected to an LED with no series resistor, black to anode (plus) and red to cathode (minus) a strong puff of air by mouth will cause the motor to generate sufficient poower to briefly light the LED. A small 2x2 inch solar cell illuminated by a 1500 lumen bulb held very close to the cell was able to operate a motor - propeller combination. I can not locate the solar cell specifications. It is not from this seller. All combinations of driving propeller and driven propellers styles (4 blade & 3 blade) resulted in sufficient power to light an LED from the power generated by the driven propeller motor/generator combination. The driving motors were powered by 12 volts. Unfortunately operating the motors at 12 volts resulted in two destroyed motors even though the sellers information seems to indicate that is an acceptable voltage. This motor and propeller kit is a good way to demonstrate several aspects of electric energy generation and use.

Me and 5 year old grandson had fun with this kid. Not the best quality but everything worked and the price was good.

My son used it for his science project on windmills, all accessories came in handy for the project.

We were hoping for a fun science project for the kids but these materials were flimsy and cheap.

Kit divertente e ben fatto

would have rathered it be in a bettr quality - the iron case broke on day 2 and the magnet looks cheap - served its purpose of education

Es un kit de imanes muy completo, con distintos imanes (de distintas formas). Además de los imanes artificiales, contiene una pequeña cajita con polvo de magnetita, el mineral a partir del cual se fabrican los imanes. Lo que me gusta es que todos los imanes tienen el polo positivo y negativo pintado para poder diferenciarlos.

We absolutely loved this kit. My son has really enjoyed creating with it. Perfect for STEM

I ordered this kit for my grandson to learn about magnetism. It arrived promptly and in good order. It's small in size but contains several different medium sized magnets that demontstrate attraction and repulsion of different polarities of magnets. The three small trains were a hit as they could be pushed on repulsion mode (Hot Wheels tracks, not included, helps to keep them in line). There are no miniscule magnets that younger siblings could accidently swallow. Educational and fun, highly recommend for young scientific minds.