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| 10 |  Conservation of energy (part 2) | AP Physics | Khan Academy | | — | Estados Unidos | 87 |
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| 18 |  Prominent, Contrast | Vocabulary | Khan Academy | | — | Estados Unidos | 86 |
| 16 |  Ecology Review: Food Chains & Webs, Relationships, Nitrogen & Carbon Cycles, Effects on Biodiversity | Amoeba Sisters @amoebasisters | 199.8K | Estados Unidos | 86 |
| 3 |  Managing natural resources | Middle school Earth and space science | Khan Academy | | 20.3K | Estados Unidos | 90 |
| 11 |  Earth's major systems | Middle school Earth and space science | Khan Academy | | 9.8K | Estados Unidos | 86 |
| 2 |  Biotic and abiotic factors | Middle school Biology | Khan Academy | | 7.1K | Estados Unidos | 91 |
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| 5 |  Protecting natural resources | Middle school Earth and space science | Khan Academy | | 2.3K | Estados Unidos | 89 |
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| 19 |  Lone STAAR Launch Interactions in an Ecosystem | Kesler Science @chrisjkesler | 944 | — | 86 |
| 15 |  Vague, Interpret | Vocabulary | Khan Academy | | 453 | Estados Unidos | 86 |
| 14 |  What Is Biodiversity? - Exploring Life’s Diversity | Miacademy & MiaPrep Learning Channel @mialearningchannelk-12 | 257 | Estados Unidos | 86 |
| 4 |  Community Interactions - Competition, Predation, and Group Behavior in Ecosystems | Miacademy & MiaPrep Learning Channel @mialearningchannelk-12 | 204 | Estados Unidos | 90 |
| 17 |  Uncovering Student Ideas in Life Science, Volume 2 | National Science Teaching Association @nstaorgnsta | 193 | — | 86 |
| 8 |  Levels of Ecological Organization - From Organism to Biosphere | Miacademy & MiaPrep Learning Channel @mialearningchannelk-12 | 188 | Estados Unidos | 87 |
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| 20 |  Teach Science Through Story | Ecosystems, Energy & Earth Systems Mini-Units | Robert Waugh @robertwaugheducation | 15 | — | 86 |