Educational tools, games, and creative experiments

GoldAdder brings together classroom resources and side projects in a modern hub. Pick a tool, jump in, and explore!

Explore

Products and Pages

Web-based graphing and scientific calculator experience.

Online testing site simulating the SAT digital test environment.

Custom arithmetic drills with timed and untimed practice.

Graphing problem generation for lines and quadratics.

Guided factoring explanations with interactive flow.

Retro-style streaming radio with channels and presets.

Arcade style trivia mashup with solo and multiplayer modes.

Fast reaction browser game with simple jump-in gameplay.

Quick scoreboard and schedule navigation across leagues.

Teacher-facing calculator buying guidance and comparisons.