History of Life on Earth (CuriosityStream, 2023) - Episode 4: Mammal Takeover — Worksheet, Answer Key & Google Forms Quiz

A one-period fill-in-the-blank worksheet for History of Life on Earth (CuriosityStream, 2023) - Episode 4: Mammal Takeover, plus answer key. Designed to be completed during the 52-minute episode runtime. Print, hand out, and you're set. Ready as a no-prep sub plan, emergency sub plan, or movie-day lesson.

• Worksheet: 1 page, 15 fill-in-the-blank questions in transcript order

• Answer key: 1 page, simple numbered list

• 52-minute runtime — fits one class period

• PDF format, two-sided printable, low-ink

• Biology, grades 6-12

• A self-grading Google Forms quiz - auto-graded the moment students submit

• Multiple choice, built from the same questions as the printable worksheet

• Assign paperless through Google Classroom, or by link - works on any device

• One-click access: the last page of the PDF carries a "make a copy" link that copies the quiz straight into your own Google Drive

• Use the printable worksheet, the digital quiz, or both

ALSO WORKS FOR

• Emergency sub plans - leave the episode and this worksheet; a sub needs no prep and no subject knowledge.

• First week of school - a low-stakes, self-contained assignment while routines are still settling.

• Movie day with accountability - students have something to complete while the documentary runs.

• No-prep days - print and go, or assign the PDF digitally.

WHERE TO WATCH

All four episodes of History of Life on Earth stream on CuriosityStream and, as of September 2026, free with ads on Tubi. Check your own access before you plan the lesson.