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Getting deep with the ocean’s master divers

Students will answer questions about the online Science News article “A beaked whale’s nearly 4-hour-long dive sets a new record,” which describes a new record for longest dive by a marine mammal, set by the Cuvier’s beaked whale. A version of the story, “Whale’s breathtaking dive impresses,” can be found in the November 7, 2020 issue of Science News.

Chemical Coaxes Locusts to Swarm

In this guide, students will learn how a newly identified pheromone may influence species behavior, research a pheromone that interests them and discuss why scientists are interested in studying such chemicals.

Chemicals cue behavior

Students will explore the chemical makeup of pheromones, how the chemicals may cue species behavior and why it’s important for scientists to study such information. Students will answer questions related to the pheromone discussed in the Science News article before applying the same questions to a pheromone of their choice.

The science of locust swarms

Students will answer questions about the online Science News article “A single molecule may entice normally solitary locusts to form massive swarms,” which describes a compound used in locust congregation that might also be used to control the pests. A version of the story, “Chemical coaxes locusts to swarm,” can be found in the September 12, 2020 issue of Science News.

Calculating a Dog’s Age Requires a Bit More Math

In this guide, students will learn how scientists used molecular biology to rethink a popular mathematical formula for finding a dog’s age in human years. Students will then analyze and discuss mathematical models.

Mathematical models of a dog’s age

Students will define, apply and analyze a new mathematical model for determining dog age in human years before comparing it to an old version of the model. Then, students will give examples of mathematical models in other fields and think about models’ benefits and limitations.

Old dog, new math

Students will answer questions about the online Science News article “Calculating a dog’s age in human years is harder than you think,” which explores how scientists used molecular biology to more accurately compare canine aging with human aging. A version of the story, “Calculating a dog’s age requires a bit more math,” can be found in the August 15, 2020 issue of Science News.

A Tiny Dino and Iron Rain

In this guide, students will learn about the smallest-known Mesozoic dinosaur and use phase diagrams to explore meteorology on an exoplanet. In an activity, students will collect and analyze data in their own homes. Editor’s Note: A study included in this guide has been retracted. Please see the comprehension questions for more detail.

Sizing up a dinosaur

Students will answer questions about the Science News article “This ancient dinosaur was no bigger than a hummingbird,” which reports on a fossil of a many-toothed, Mesozoic predator.

Why Bat Viruses Are So Dangerous

This guide will help students understand how viruses in other animals can infect people, sometimes leading to epidemics or pandemics. In a group activity, students will imagine they are health officials developing action plans to prevent or stop an epidemic.

The truth about bats and viruses

Students will answer questions about the Science News article “Why bat viruses are so dangerous,” which explores how the animals’ immune defenses might lead to killer human pathogens.

Cats and Punnett squares

Scientists would like to breed cats that don’t trigger allergies in people. By constructing and analyzing a Punnett square for two low-allergen cats, students will review key concepts including patterns and probabilities of inheritance, genotype, phenotype, genes, alleles, chromosomes and mutations.