LS4.B-H2 | Disciplinary Core ideas
The traits that positively affect survival are more likely to be reproduced, and thus are more common in the population.
NGSS Disciplinary Core ideas
Find free, ready-to-teach resources aligned to LS4.B-H2. Designed with teachers and artists, in partnership with STEM researchers.
LS4.B-H2 | Disciplinary Core ideas
The traits that positively affect survival are more likely to be reproduced, and thus are more common in the population.
Created with purpose: see how resources connect to this standard.
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Guardian Frogs of Borneo: Why Exceptions Matter in Biology and Everyday Life

Out of 8,000+ frog species, Guardian Frogs are one of the first to show females that call & males that care for offspring. Students will gain wonder and appreciation for how diverse animal mating systems are while doing fun activities and analyzing real data.
Alignment summary( Connected)
This standard is not explicitly addressed, but can easily be connected by asking students to explain how some of the behaviors covered in the lesson should be favored by selection (i.e. how they increase survival and/or reproduction of individuals who behave that way, compared to those who do not).
Included resources
3 lessons and 3 supporting media items.
Hybrid Zones: Evolution's Testing Grounds
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Students will learn that hybrids are not flukes—they’re commonly found in the wild and our grocery stores! By playing and reflecting on Foraging Frenzy (a research-inspired memory game) students will appreciate how climate change affects species ranges and the direction of evolution.
Alignment summary( Connected)
Lesson 1
Students reflect on how hybrids with beneficial traits become more common in everyday life, especially in foods we eat.
Included resources
3 lessons and 4 supporting media items.
Lesson 2
Supporting videos
Lesson 3
Supporting videos
