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Khan Academy

Khan Academy: Use Geometric Sequence Formulas

For Students 9th - 10th Standards
Given the formula of a geometric sequence, either in explicit form or in recursive form, find a specific term in the sequence.
Interactive
Shodor Education Foundation

Shodor Interactivate: Sequencer

For Students 9th - 10th Standards
Learn about number patterns in sequences and recursions by specifying a starting number, multiplier, and add-on. The numbers in the sequence are displayed on a graph, and they are also listed below the graph.