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Subject calculators and a custom calculator builder

A browser route sketcher with distance, elevation and GPX export

Route maps and great-circle distance calculations

A keypad calculator with clear, memory and percentage controls

Depth-of-field and hyperfocal calculations

Hiker-contributed trail maps with distance, ascent and route difficulty

Running plans organized around distance, schedule and ability

Map measurements, radii and geographic lookup tools

Geographic area, distance and travel-time map calculations

A graphing-calculator emulator in the browser

A TI graphing-calculator emulator for classroom explanation

Everyday calculation categories with a simple keypad

Open-distance university study from South Africa.

Open-distance study with a regional learning network.

Everyday calculations with topic-specific explanations

Programmable scientific arithmetic with saved formulas

Scientific, graphing, fraction and matrix calculations

Readable calculators for quick everyday tasks

Sketch, teach, and collaborate on a free real-time whiteboard with calls built in.

Calculate driving, walking, and cycling routes between ordered coordinates.

Draw an outdoor route, inspect its hills and choose optional guided navigation

Organize dividend portfolios and compare income-growth scenarios

Sport-specific routes for cycling, hiking and outdoor activity

Mountain-bike trail and ride discovery with terrain and difficulty context