Skip to content
PlayOwl

Explore · Wonder · Discover

How Things Work

Ever wondered how airplanes fly, why popcorn pops or how your heart pumps? Pick a question, then watch it, look inside, try it, solve a challenge and go deeper. Every topic changes for Preschool, Elementary and Middle school.

  1. 1Watch it
  2. 2Look inside
  3. 3Try it
  4. 4Solve a challenge
  5. 5Go deeper

500 topics to explore · showing 289–312

Every topic

#289 Food & farming How does drying preserve food? Remove water from virtual fruit and compare moisture, texture, and microbial growth conditions. #290 Food & farming How does freezing preserve food? Follow ice formation and compare changes in microbial activity and food texture. #291 Food & farming How are pickles made? Compare vinegar pickling and fermentation while exploring salt, acidity, and preservation. #292 Food & farming How does rice get from fields to our plates? Follow harvesting, drying, husking, and optional polishing through a miniature processing line. #293 Food & farming How do potatoes grow underground? Explore underground stems, developing tubers, and harvesting in a virtual potato bed. #294 Food & farming How does hydroponic farming work? Grow plants with nutrient solution and compare ways to support roots without soil. #295 Food & farming How does aquaponics connect fish and plants? Trace water through fish tanks, bacterial processing, and plant roots. #296 Food & farming How does drip irrigation water crops? Arrange pipes and emitters and compare water delivery to different root zones. #297 Food & farming How does crop rotation help farms? Plan several seasons and explore changing nutrient needs, pests, and soil cover. #298 Food & farming How do farmers use natural pest control? Introduce beneficial organisms and observe effects on pests and crop damage. #299 Food & farming How does a hen make an egg? Assemble yolk, albumen, membranes, and shell along a simplified internal timeline. #300 Food & farming How is sea salt produced? Guide seawater through evaporation, crystallization, harvesting, cleaning, and packaging. #301 Making everyday things How is steel made? Follow iron through a simplified steelworks and shape finished steel into useful products. #302 Making everyday things How are aluminum drink cans made? Form a metal disc into a can, then trim, coat, decorate, and attach a lid. #303 Making everyday things How are rubber tires made? Assemble rubber layers, reinforcement, and tread before shaping and curing in a mold. #304 Making everyday things How are shoes made? Assemble upper pieces around a foot-shaped form and attach the sole. #305 Making everyday things How is paint made? Combine pigments and binders and compare how different mixtures cover surfaces. #306 Making everyday things How is sticky tape made? Coat a backing with adhesive, roll it onto a core, and cut different widths. #307 Making everyday things How are plastic bottles made? Watch a heated starter piece expand against a mold using compressed air. #308 Making everyday things How are balloons made? Dip molds into liquid latex, dry the coating, and remove finished balloons. #309 Making everyday things How is concrete made? Mix cement, water, sand, and gravel and explore filling molds and curing. #310 Making everyday things How is plywood made? Alternate thin wood sheets' grain directions and press the glued layers together. #311 Making everyday things How is lumber prepared for building? Follow logs through sawing, drying, grading, and planing into construction boards. #312 Making everyday things How is wooden furniture made? Turn a design into measured pieces, assemble joints, and choose a finish.

Topics by category