Physics Toys Introduction
Physics toys are great at capturing kids’ attention and energizing their imagination. They capture in deceptively simple ways the magic that happens all around us.
Physics toys, when done right, creatively demonstrate fundamental scientific principles in an engaging way. The only pitfall is that many of the physics toys on our list straddle the fence between being toys and being desk or shelf ornaments.
However, either way, we expect your child will be engaged by these physics toys for at least a few moments, if not a few weeks, months, or years.
Physics Toys List
Newton’s Cradle
Newton’s Cradles are the perfect way to demonstrate the conservation of momentum and energy, as well as friction.
In addition to being an excellent example of important physics concepts, Newton’s Cradles are one of the more popular physics toys among executives who regularly include them with their desk decor. However, they delight young children just as much, though they will not generally occupy one’s attention for very long.
I would skip buying this specifically for a child and, instead, buy it is a knick-knack for the entire family.Unfortunately, the models you find at Amazon, even those with 4+ star reviews, generally have a number of complaints about product quality (either cheaply made, strings tangling easily, or ball movement limited to 15-20 seconds). The best model available online seems to be Fun Central’s Light Up Netwon’s Cradle; however, I would strongly consider buying in person where you can personally check the quality of the toy.
Moons in Motion
More art than toy, this kinetic device is a fun way to teach your child about the seminal concept every action has an equal and opposite reaction. The moons orbit around a 7″circular piece. Just remember to pick up a 9 volt battery before trying to operate.
Sick! Science Fast Physics
With the Sick! Science Fast Physics set kids can playfully explore key physics concepts: inertia, potential energy, kinetic energy, gravity, and acceleration. This physics kit has received great reviews from parents and teachers alike. However, the kit advertises 9 projects but users report that there are fewer than that (more like 4-5) with several having add-ons (similar to Snap Circuits products that count projects with only minor changes).
One common complaint is that one of the projects–popsicles sticks demonstrating kinetic energy and potential energy–is too difficult.
Spinning Tops
Like many of the physics toys on this list, spinning tops are quite simple yet still manage to capture the attention of users. Although tops can theoretically spin indefinitely, factors such as friction prevent that from occurring. However, the quality of the top is one factor you can control. Searching Amazon, you can find many available tops, but even the more expensive versions have many negative comments (even this 4-star version). Our suggestion is to go with a cheap model that can be enjoyed in short bursts (e.g., Newborn Kingzer which is made out of cheap zinc alloy and extremely small) or a more professionally-made version (e.g., Vorso’s MK1 which is noticeably more expensive but has me wanting to buy a top for the office).
Telegraph Kit – The Science Cube
This educational kit teaches kids how to create their own telegraph and send Morse code messages. It only requires a D-Battery to work out of the box. Reviews on this kit, though, are mixed. Though the description encourages you to send messages to friends, this unit cannot communicate to another machine.
Also, the noise is somewhat lacking, though attaching a small speaker (not simple plug and play project) improves the quality and could add another element of learning.
Sick! Science Battle Bots
The Cartesian diver is a common physics experiment used to demonstrate the principle of buoyancy. The Battle Bots is a toy version of the experiment that may appeal to kids due to the presence of a cute squid playing the role of the diver. You can find many different versions online through Amazon or other vendors but the Sick Science version has some of the better reviews.
The primary complaint of this model, and honestly of most Cartesian diver derivatives, is that it is not the most engaging demonstration.
Instead, you may consider purchasing one of the other physics toys on our list and just your young STEM learner(s) this video:
Poly Density Kit
The Poly Density Kit from Educational Innovations is an excellent way to teach kids about density. Who can’t resist picking up a bottle, shaking it, and pondering just how two different color beads behave differently (as several science teachers who have reviewed the product attest to). Educational Innovations have prepared a useful explanation for just how the “trick” works.
Leonardo da Vinci Catapult Kit
The Leonardo da Vinci Catapult Kit is a great kit if your child enjoys model building and then playing with her or his models. Besides that, this catapult tops anything I built as a kid (my best “catapult” involved a spoon and vegetables launching across the kitchen!).
All pieces in this kit are pre-cut and ready to be assembled. Recommended ages are 8 and above, but at least one customer indicated their 8-year old could not complete the catapult without supervision. Mileage may vary depending on the user.
Overwhelmingly, though, reviews on this catapult kit are excellent. Check out a video review and live demo from GreatKidsToys:
Feel Flux
Feel Flux represents a feel-good story of IndieGoGo success. Fully funded in 2014 Feel Flux relies on neodymium ball passing through a metal (aluminum, copper, or silver) tube to demonstrate anti-gravity. And in case you’re wondering how one defies gravity, look no further than Lentz’s Law.
Fell Flux is not sold through the U.S. based Amazon site (though you can find it listed on the UK version) but you can buy directly from the company with no shipping costs; which is good because it is a bit pricey with $49 being the lowest price point. At that price, it is easy to agree with the concern of others that the price is not balanced by the amount of time kids will spend using this. The price is fair for a teacher planning to demonstrate anti-gravity principles each semester or year. Or, if you’re looking to splurge, it really is a brilliant and enjoyable product.
Or, you can just watch this video to learn about it and loop the actually the ball dropping:
Toysmith Euler’s Disk
Wikipedia offers a great breakdown of the physics behind Euler’s Disk. Toysmith’s version has many favorable reviews and appears to be a great Euler’s Disk model. It comes with nine holographic magnets, which give the chrome-plated disk different appears while spinning.
Our suggestion is to watch the video and if you think it looks fun, consider purchasing one.
Thames & Kosmos Physics Workshop
The Thames & Kosmos Physics Workshop set is one of the better physics toys available for teaching mechanical physics. With over 150 reviews on Amazon and a well-above average rating, it is safe to expect that your young physics enthusiast will enjoy this physics kit. The over-300 piece kit teaches how to build 36 different models, including a potter’s wheel, water-powered sawmill, and a simple combination pulley.
The biggest complaint is that despite being 64 pages long the instruction manual does not explain the projects well enough. Easily frustrated builders may have a difficult time completing some models. You can check Toysmith’s sample manual to get an idea of the complexity and guidance provided.
Toysmith 3-D Mirascope
For an in-depth explanation of the mirascope, check out this post from Real World Physics Problems. In short, the mirascope relies on two identical parabolic mirrors to reflect an image of the object placed inside it. Instead of looking at the actual item, you instead will be looking at a perfect replica!
It is a neat trick and one that is generally entertaining. However, the entertainment may be short-lived which makes this a questionable purchase as a toy for your child. If you don’t mind spending around $8 for some short-term fun and something to entertain house guests, you will most likely be pleased with picking one of these up.
ScienceWiz Physics Experiment Kit
This kit offers 24 experiments to help your child learn Newton’s Laws of Motion. Experiments include bottle rockets, inertia tricks, and floating air pucks. Step-by-step instructions make these experiments easy to complete.
The product quality appears to be quite high, but responses regarding enjoyment, particularly continued enjoyment and re-play value, range from boredom shortly after starting to many hours of enjoyment. The younger the child, the more mileage you can probably expect to get out of the kit.
Kids First Physics Lab
This kit offers 22 experiments for your little STEMmer to learn mechanical physics and engineering. The kit focuses on having users construct models ranging from pulley systems to cranes to inclined planes: all mechanical systems whose root function is to reduce work. The kit, though, focuses also on older technologies that reduce work as well: wheelbarrows and trebuchets. In addition to work-reduction, the kit also introduces kids to the solar system and the impact of the moon’s and sun’s motion via sundials and and a rotating Earth-Moon model.
Reviews on this kit are overwhelmingly positive with, at the time of publication, 27 4- or 5-star reviews on Amazon (and none lower than 4). Teachers, parents, and kids all enjoy the kit and the kits it enables young learners to build.
K’Nex Education – Forces and Newton’s Laws Set
Any package of K’Nex is a worthwhile addition to your STEM toys collection. The K’Nex Education—Forces and Newton’s Laws Set, though, offers parents an instructional guide to help their young STEMmers build 11 fully functional real-world creations. K’Nex designed the set to introduce children in grades 5-9 to physics concepts such as forces, energy, and motion.
Note: Small parts and not recommended for children younger than 4 years old.
Tedco Hand Boiler
Hand boilers are one of the more straightforward physics toys. Despite that, it still causes excitement or awe when someone–kid or adult–picks it up for the first time. The secret to hand boilers is that the difference between room and hand temperature causes a reaction. Tedco’s hand boiler has some of the best reviews, namely because it is inexpensive and works well. The downside is that is rather fragile and should not be used irresponsibly (i.e., children may require supervision depending on age and maturity).
Thames & Kosmos Physics Simple Machines
This physics kit focuses on 6 simple machines: pulleys, inclined planes, wedges, screws, levers, and wheels and axles. The kit targets kids at least 8 years old and requires each model be assembled. Thames &
Kosmos’ Physics Simple Machines has received a number of good reviews, but the few negative reviews really highlight potential problems with this kit. The kit provides a convenient package with all needed elements and instructions at a relatively decent price.
However, if one is willing to forego convenience, the entire kit could be sourced at the local hardware store or through Amazon at roughly the same price. And with higher quality parts (e.g., metal instead of plastic). The only thing you would be missing is the instructions and some time.
Thames & Kosmos Physics Discovery
The Physics Discovery kit is yet another physics kit released by the STEM toy company Thames & Kosmos. Like their Simple Machines kit, this one, too, offers many opportunities to build simple machines. Kids can build motors, catapults, freight elevators, bicycles, water wheels, and more. A 32-page instruction book walks you through constructing 12 models and conducting experiments that will teach the user about forces and simple machines.
Unlike some of their other products, the Physics Discovery has been heavily criticized. Specifically, it has been criticized for the immense difficulty involved with constructing the models. The instructions contain microscopic pictures and incomplete information that has caused several people to spend several hours on one project.
If you’re just looking to purchase a building kit that your child can tinker with, or if you already have several Thames and Kosmos components, you may consider purchasing this. But, as a first purchase, I would recommend looking elsewhere.
Little Labs Physics and Forces
Another physics kit from Thames & Kosmos that focuses on mechanical physics; this kit emphasizes teaching young scientists about forces and motion. The pieces are sturdy despite their inexpensive cost. However, there are a number of small parts that can be difficult for less dexterous kids to manipulate.
Also, like several Thames & Kosmos products, the guidebook is not terribly detailed and may lead to frustration; or inventiveness if your kids are happy to ignore the “proper” way of building.
Atom Kinetic Mobile
Atom Kinetic Mobile is half art piece, half learning tool. Ultimately, though, this will most likely end up sitting on a shelf: amazing people who have never seen it before but eventually losing a kid’s interest. At a sub-$10 price, it’s not a bad item to pick up.
Recent reviewers have not mentioned the part quality, but reviews from 2014 were critical, even calling the device cheap-looking. At its price point, though, it is hard to expect something of significant quality. Also, the device requires one 9-volt battery and appears to only last 3-4 weeks.
Slinky (Hook’s Law)
Many may not consider the classic Slinky a physics toy, but it is a perfect demonstration of Hook’s Law and momentum. The only downside is that current iterations of the Slinky do not consistently have positive reviews. The solution is to track down a “vintage” version online through eBay or another second-hand toy seller.
For your enjoyment, a vintage 1980’s Slinky commercial:
Thames & Kosmos Physics Solar Workshop
The Physics Solar Workshop kit teaches kids about solar energy by using photovoltaic cells which transform light into electrical energy. With this physics kit, kids can use 138 parts to build 5 models (though not all at once): simple helicopter, solar-bot, moon rover, stag beetle, and praying mantis.
The kit can also be powered via batteries and may ultimately end up being the primary method of operation. While this does void the solar aspect, the models themselves appear to be great fun, and this kit adds a good number of components that are fully functional with other Thames & Kosmos pieces.
Balancing Bird (eagle)
Balancing Birds offer a fun demonstration of how center of gravity works. While it appears this simple toy breaks the laws of physics, it actually displays just what happens when one establishes equilibrium. In this case, equilibrium is achieved by placing magnets in each wing which then allows the bird to balance on its nose. Although quite simple, this physics toy seems to bring kids back for hours of enjoyment (in minute bursts).
Drinking Bird
Drinking birds are not only a classic toy (first documented appearance as early as 1910) but also a room temperature heat engine that can be used in chemistry and physics classes to teach students the combined gas law, the ideal gas law, the Maxwell-Boltzmann distribution, heat of vaporization, capillary action, and wet-bulb temperature. Check Wikipedia for a short, yet detailed, summary of how the drinking bird precisely works.
Once set up, the drinking bird will continuously “drink” as long as there is water in the cup it is “drinking” from, or as long as its head is wet. This toy is more for simple observation than playing, so keep that in mind before purchasing. Also, more than many toys on this list, this one is an absolute safety hazard due to the glass components.
Galileo Thermometer
Galileo Thermometers are an interactive thermometer that relies on the principle–discovered by Galileo–that the density of a liquid changes in proportion to its temperature. This principle causes the bulbs found in the thermometer to move up or down depending on the current temperature.
Like several items on this list, this may be more an item that you show your young scientist and explain the concepts moreso than a toy that they handle repeatedly themselves. Also, the product is made largely of glass which gives it a nice appearance but also makes it a safety risk around little ones.
Snap Circuits (300 project set)
Snap Circuits are electrical building kits that use safe components and colorful parts/manuals to teach children how to build circuits. From personal experience, we can highly recommend their products. The primary (and only safety concern we have observed aside from a child trying to swallow a piece–no small task!) is connecting a piece backwards. For that reason, adult supervision is a great idea! However, the worst case scenario is that you may damage a piece that can be easily replaced online through Elenco.
For a more detailed look at the 100 project set, check out our review of the 100 project Snap Circuit kit.
4M Static Science
As the name implies, 4 Static Science teaches kids how to do cool tricks with static electricity. With only 6 relatively straightforward experiments, the fun will probably only last but so long. Also, the included components are plastic and perhaps do not justify the price point (~$10); however, the included manual does provide value by walking users through the experiments and explaining certain elements. Keep in mind though that kids may need someone to help them with the instructions. They will also need to use common household items to complete some experiments.
Overall, it is decent value if you’re interested in your kid learning about static electricity but do not want to take the time to locate experiments online and collect the items that are included in the box (plastic tube, neon bulb, electroscope, foam bits, stickers, string, plasti wand, bottle cap, 2 balloons, and a spiral wire.
OWI Solar Space Fleet
Solar Space Fleet is an alternative-energy powered science kit that introduces kids to the beauty of solar power by using the included solar panel to provide energy to the 7 modules. You can also power the kit via a micro-rechargeable battery using 2 AAA alkaline batteries (not included).
Recommended ages are 8-15 and reviewers seem to agree that children in that range will enjoy the kit. Building each module is not too difficult but provides some measure of challenge. Additionally, interacting with the modules (e.g., changing speeds based on light exposure) provides additional opportunities for fun!
You can build 7 different modules with this kit, but you cannot build all of them at once. You must deconstruct one build before moving on to another.
Thames & Kosmos Magnetic Science
The Magnetic Science physics kit contains around 12 magnets that can be used to complete 33 different experiments with the help of the included guide. The kit aims to teach kids about magnetic field and poles through the use of various magnets. Some of the projects you can complete are making invisible magnetic fields and building an electromagnet. The kit includes a lengthy reference manual to guide users.
Downsides include fragile parts and some experiments not living quite up to expectations (the compass is repeatedly mentioned as lacking).
K’Nex Forces, Energy and Motion
As the name states, this K’Nex kit focuses on forces, energy, and motion. Users will be able to build 11 working vehicles using the included 442 K’Nex pieces and 3 motors. The kit also includes a Teacher’s Guide CD that follows the 5E model. It outlines 11 lessons to help students learn about energy transfer, Newton’s Laws, motions, forces, and inertia. The hands-on construction encourages users to engage with the process.
Recommended ages are 10 and above. Unless you have a rather advanced child, the recommendation is fairly accurate. However, even young ones can enjoy this kit if they have an adult to assist with the construction.
Magic School Bus – Jumping into Electricity
You can join Ms. Frizzle on the Magic School Bus and learn about electricity through simple experiments: creating static electricity, working with insulators and conductors, and designing games. This science kit comes with a 20-page instructional guide.
The recommended ages are 5-12, but this science kit skews downward as most 10-12 years old children may find the experiments too simple. At it’s price point ($10-15 when on sale; regularly $20), it’s not surprising that some people complain about product quality: basic circuit board, flimsy cardboard, and common alligator clips (though the clips are rather standard and not necessarily a sign of skimping).
Water Rocket Kit
The linked water rocket kit uses a recycled plastic bottle (not included), bicycle pump (not included despite Amazon’s manufacturer description saying included; according to an Amazon reviewer, you will need a Presta type valve stem or adapter), and water pressure to fire a rocket into the air. Ideal for kids interested in rocketry or spacecraft, the 4M rocket kit will still appeal to most children. However, adult supervision and assistance with setup is probably needed.Or, if you prefer to build your own, you can check out this video:
Boomwhackers
Boomwhackers can be a fun way introduce kids to properties of sound, specifically how different sizes of objects will impact the sounds they generate. The linked chromatic boomwhackers consist of the 5 sharps and flats for a standard octave. A few people have questioned the quality of the set but it also contuines to be viewed favorably.
Flying Pig
What better way to teach kids about circulation motion than with a flying pig in their bedroom! Besides that, it offers up immense opportunities for “when pigs fly” jokes. Lots of positive reviews suggest that this is one of the best physics toys to purchase at an inexpensive price point; and it could provide much enjoyment in addition to teaching a simple a physics concept.
Just make sure to pick up 2 AA batteries.
Skip to around 3:40 to see a grainy example of the pig in action.