4-in-1 RC Robot Kit for Kids and Adults - STEM Toy Making Set, Building Blocks, No Soldering Required - Model SM1701 - Train, Firetruck, Skier and Duck (Easy to Medium Difficulty) DESIGN & QUALITY: Built to last, the Brain Crunch Smart Machines construction kits allows you to build your own motorized vehicles and machines and control them with the included infrared remote. Kit includes a full color instruction manual with diagrams to build 4 models of varying difficulty. Comes in portable storage box. For ages 8+ UNLEASH YOUR CREATIVITY: After you've built the models in the instruction manual, you'll be well-trained to create your own motorized machines with the reusable modules. PLAYTIME VALUE: Each model included take anywhere from 30 to 120 minutes to complete, depending on the difficulty level and the age of the child. Other kits claim to have 10 or more models but they take 5-10 minutes to build. If you are looking for longer play time, this is exactly what you need! EDUCATIONAL: BrainCrunch Smart Machines are designed to foster STEM (Science, Technology, Engineering, and Math) skills through fun. They encourage patience and focus in children, while developing their logical thinking skills and creativity. MADE FROM SAFE MATERIALS: Made from high quality non-toxic materials, the Brain Crunch Smart Machines kits are free of phtalates, lead and other heavy-metal. Certified for the Consumer Product Safety Improvement Act (CPSIA) and HR 4040. 170 reusable bricks, wheels, tires &amp; connectors 2 powerful motors wireless remote control unit &amp; receiver* 52 pages full color manual with detailed diagrams Duck (difficulty level: 1/5) Firetruck (difficulty level: 2/5) Train (difficulty level: 2/5) Skiing Robot (difficulty level: 3/5) <span class="a-text-bold">They develop fine motor skills hand-eye coordination capabilities</span>.These skills are very important in technical learning studies such as science and engineering. <span class="a-text-bold">They promote fine spatial skills.</span>It has been proven that children who play with toys that require fine spatial skills outperform their peers in mental rotation and spatial visualization. Children will learn to analyze what they see, perceive the parts that make up the whole, and figure out how the parts relate to each other. <span class="a-text-bold">They teach problem solving.</span> Smart Machines robot building kits are an ideal tool to teach problem solving skills; kids will learn to figure out whats wrong with a model they built that does not work as planned, and will be proud to solve the problem on their own. <span class="a-text-bold">They develop science skills.</span>Children will learn balance and gravity, experimenting, cause and effect. <span class="a-text-bold">They introduce math skills.</span>These building blocks will teach children life-long skills such as geometry, area, size, equivalents, sorting by size/shape <span class="a-text-bold">They encourage creative thinking.</span>Once a child has learned the co-relation between the blocks and the motors, they will be thrilled to make unique robots of their own.