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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 481–500

Every topic

#481 Money, shops & services How does an ATM dispense money? Follow card verification, account checks, note counting, and dispensing inside a transparent machine. #482 Money, shops & services How does a debit-card payment work? Trace a purchase through merchant, payment network, and bank using pretend account balances. #483 Money, shops & services How does a credit-card payment work? Follow a purchase, statement, and repayment using a fictional account and simple balances. #484 Money, shops & services How do contactless payments work? Bring a virtual card near a reader and follow the short-range exchange and authorization. #485 Money, shops & services How does a bank transfer move money? Follow payment instructions and changing balances between two fictional bank accounts. #486 Money, shops & services How does depositing a check work? Trace a check through capture, verification, clearing, and settlement in a simplified model. #487 Money, shops & services What happens after an online order is placed? Follow an order through stock checks, picking, packing, shipping, and delivery. #488 Money, shops & services How do parcel centers sort packages? Scan labels and route packages along conveyors toward the correct destinations. #489 Money, shops & services How does delivery tracking know where a package is? Add scan events along a journey and watch the tracking history update. #490 Money, shops & services How do supermarkets keep shelves stocked? Balance sales, inventory, reorder points, deliveries, and shelf space in a model store. #491 Money, shops & services How does a self-checkout machine work? Scan products, match prices, check a basket, and complete a pretend payment. #492 Money, shops & services How does a vending machine deliver a snack? Follow selection, payment, motor movement, and delivery through a transparent machine. #493 Money, shops & services How does a library track borrowed books? Borrow and return virtual books while updating availability, borrower records, and due dates. #494 Money, shops & services How does an emergency call reach the right help? Follow location details, call assessment, dispatch, and responder updates in a fictional scenario. #495 Money, shops & services How do restaurant orders reach the kitchen? Send an order through preparation stations and coordinate its completion and collection. #496 Money, shops & services How do hotel key cards open the correct door? Match a card's permission with a model lock and explore how access expires. #497 Money, shops & services How do garbage trucks collect and compact waste? Operate lifting equipment and follow waste through loading and compaction inside a cutaway truck. #498 Money, shops & services How do water meters measure household use? Run virtual taps and follow measured flow into a household usage total. #499 Money, shops & services How do digital tickets open entry gates? Scan a fictional ticket, verify its permission, and update its entry status. #500 Money, shops & services How does the cold chain keep food chilled during delivery? Follow food through storage, refrigerated transport, shops, and temperature checks along its journey.

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