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Curated OER
Base It
Third graders complete place value charts in the decimal system, the binary and Hexadecimal system. They discuss the contributions made by Ada Lovelace to computer language. They express the idea of place value with exponents.
Curated OER
Transistor Hunt
Students locate transistor devices in school. They explain the importance of transistors.
Khan Academy
Khan Academy: Counting Systems and the Piraha Tribe
Read a passage about the counting system of the Piraha Tribe and answer the follow-up questions.