Plickers

Transform classroom assessments into quick, engaging polls using scannable student cards and instant feedback

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Crowdsourced audio pronunciations from native speakers help you master words in hundreds of languages

Adaptive K-5 literacy program offering personalized lessons and actionable teacher insights aligned with Common Core

Measure fluid intelligence with progressive pattern puzzles and track your cognitive performance over time

Validate, analyze, and generate credit and debit card numbers with detailed issuer information

Crowdsourced homework help platform connecting students worldwide with fast, community-powered answers and explanations

Practice popular melodies on a customizable virtual keyboard with guided notes and adjustable key sizes