| Rainforest Animals |
New!
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| Rarest Places |
New
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| Real World Math: Geography (8 titles) |
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| Real World Math: Natural Disasters (8 titles) |
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| Recycling and Waste |
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| Red-eyed Tree Frog |
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4.7 |
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| Red Fox |
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1.4 |
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| Renewable Energy |
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| Renewable Energy in Infographics |
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| Reptadores furtivos (Slinky Sliders): Serpiente de cascabel (Rattlesnake) |
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1.3 |
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| Responding to Natural Disasters (8 titles) |
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| Restoring Structures |
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4.5 |
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| Reticulated Python |
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5.3 |
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| Reusing and Recycling (2 parts) |
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| River |
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| Road to Recovery (16 titles) |
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| Robin |
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| Rosy Wolf Snails Invade Pacific Islands |
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4.0 |
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| Round and Rare: Giant Panda |
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1.2 |
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| Rover |
Soon!
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