Predation occurs when one organism, the predator, kills and eats another organism, its prey. In this lesson, students will learn about the recently discovered chemical predation tactics of the feather-legged lace weaver spider, which vomits toxins on its prey. Students will explore the possible evolutionary advantages and disadvantages of this technique and research another organism that uses chemical means for predation.
Climate scientists are continuing to develop new methods to sequester atmospheric carbon to help curb climate change. In this activity, students will learn about how carbon can be sequestered through the burial of organic material and review the carbon cycle. Students will practice using percent by mass concepts and dimensional analysis to calculate how much wood would need to be buried to achieve climate targets by the year 2060. As an optional extension, students may then develop a plan to mitigate greenhouse gas production that utilizes biomass burying techniques.
Coral reefs are one of the most biodiverse ecosystems on the planet. Along with providing food and shelter for a variety of marine organisms, coral reefs reduce erosion and protect coastal cities from storms. However, coral reefs are threatened by the effects of climate change. In this activity, students will model the complex interactions that occur within corals, their ecosystem and the Earth’s spheres to learn about how climate change harms coral reefs. After modeling how these interactions change with increasing ocean temperatures, students will brainstorm potential ways to solve or mitigate coral bleaching.
Scientists in Brazil have just discovered a creature that claims two small but fierce titles: the smallest known vertebrate and the smallest known amphibian. This raindrop-sized vertebrate earned a rather misleading name for itself — the “flea toad.” Use metric units to make and compare measurements and learn the differences between toads and frogs before discussing the misleading nature of the amphibian’s name.
How can one tiny ant species cause a savanna-wide shift in the food web? Outline the cascading effects of the disruption of one mutual relationship and create graphs that highlight how an invasive species can have significant indirect effects on an ecosystem.
That old saying, "drawn like a moth to a flame," needs a revision. Many flying insects may appear to be captivated by the glow of a nighttime lamp. But things aren't always what they seem. The reality turns long-held assumptions topsy-turvy. New findings suggest that flying insects are not attracted to the light at all, but actually turn their backs to it. Learn how new evidence challenges old theories and hypotheses while answering questions and discussing how the evidence from such studies supports conclusions.
Every little bit of rest counts. For a chinstrap penguin, about 10,000 brief snoozes each day can add up to more than 11 hours of rest. Learn how these animals adapted to their environment by managing to grab this much-needed shut-eye. And they do it without relaxing their guard. Then answer questions discussing the relationship between habitats, behavior and sleep patterns.
Gardens have many functions ranging from vegetable and fruit production to flood mitigation and erosion control. Gardens also can be a haven for pollinators and a repository for native plants. Over the course of a year, students will design a garden for their school or a community organization using scientific concepts they learn in class.
In a “perfect comeback” move, birds may be fortifying their nests with anti-bird spikes plucked from rooftops and eaves. Learn about the new findings and foster healthy skepticism by inviting students to evaluate evidence used in the article to support claims.
Lakes can vary in color based on levels of sediment, organic matter and algae. Sometimes though, a lake will stand out – not matching the other lakes in an area. Look for these anomalies by participating in a virtual lake scavenger hunt, and help figure out why these lakes don’t fit in! In this activity, students will learn how climate change influences lake color and will investigate lakes with irregular colors that have been impacted by natural or human-made forces.
