A minute of science, please. is a delightful collection of small one-minute films each explaining, using animation, archival images, and an often humorous narrative, various phenomena and scientific discoveries.
Streaming availability for US region, via JustWatch.

Mickey's Steam Roller
1934

The Dover Boys at Pimento University or The Rivals of Roquefort Hall
1942

Donald's Lucky Day
1939

How to Play Football
1944

The Big Bad Wolf
1934

Chip an' Dale
1947

The Hockey Champ
1939

Futurama: The Lost Adventure
2008

All in a Nutshell
1949

Mickey and the Seal
1948