Videos (Peps) — review gallery

Current finished videos, grouped by course. Updated 2026-09-10 07:06 UTC.

Every video is interactive with built-in multiple-choice questions. The players below show the video only; the questions appear when played through the AlphaVideo interactive player.

HS Physics

Kinematic equations: introduction

Kinematic equations: summary

Free fall: introduction

Free fall: summary

Waves: introduction

Waves: summary

AP Biology

Water structure and hydrogen bonding

Topic 1.3 intro: What happened to the bread

Topic 1.3 lesson: Two pieces off, one water out

Topic 1.3 lesson: Count the gaps

Topic 1.3 summary: Follow the water

Topic 1.4 intro: Pasta, a sugar cube and a lettuce leaf

Topic 1.4 lesson: Pull from the ends

Topic 1.4 lesson: A thread and a spoonful of cornstarch

Topic 1.4 summary: One sugar, three arrangements

Exam skills: How AP Biology asks you questions

Module introduction

Module summary

AP Biology, condensed-brief comparison set

Topic 1.3 intro (condensed brief)

Topic 1.3 lesson: Chains, build and break (condensed brief)

Topic 1.3 lesson: Counting the water (condensed brief)

Topic 1.3 summary (condensed brief)

Topic 1.4 intro (condensed brief)

Topic 1.4 lesson: One sugar, many chains (condensed brief)

Topic 1.4 lesson: Starch, glycogen and cellulose (condensed brief)

Topic 1.4 summary (condensed brief)

Exam skills intro (condensed brief)

Exam skills summary (condensed brief)