Graphic tracking chromosome number during division

What do we care most about? We care about social collaboration, immersing students in investigations of science phenomena, developing artifacts that demonstrate rigorous learning, and then presenting those artifacts for community use.

For the first time in modern history, the world's population is expected to virtually stop growing by the end of this century, due in large part to falling global fertility rates, according to a Pew Research Center analysis of new data from the United Nations. By 2100, the world's population is projected to reach approximately 10.9 billion, with annual growth of less than 0.1% - a steep decline from the current rate. Between 1950 and today, the world's population grew between 1% and 2% each year, with the number of people rising from 2.5 billion to more than 7.7 billion.

Weaving Social Justice Into Science Instruction Shedding light on inequity in science fields bolsters students' critical thinking skills and sense of self-efficacy in science. A free curriculum helps teachers get started.

online interactive questions no log in; provides feedback

build out interactive food web activity using site and word doc on this file: https://www.sciencelearn.org.nz/resources/1525-build-a-marine-food-web "Build_a_marine_food_web.doc"

This case study centers on symbiotic relationships between insects and bacteria using Drosophila melanogaster, the common fruit fly, and the recently discovered bacterial species Sodalis praecaptivus. Until recently, the only known Sodalis species of bacteria were symbiotically associated with several different species of insects. However, free-living non-symbiont Sodalis species are being tested in several different insect species to determine if they can transition into symbiotic relationships. A pre-class assignment (see Supplemental Materials) directs students to read an open access research journal article providing a comprehensive review of S. praecaptivus and describing an experimental weevil model that parallels that of the fruit fly. A PowerPoint presentation shown in class (see Supplemental Materials) provides further background before students work in small groups to complete the case study focusing on results from D. melanogaster and S. praecaptivus model experiments.  Although developed for a genetics course, this interrupted case is appropriate for an upper-level biology course. It can be completed within a 75-minute class meeting, or adapted for shorter time periods.

Database of science lesson resources.

Over the past few decades, genetic research has revealed two deep truths about people. The first is that all humans are closely related-more closely related than all chimps, even though there are many more humans around today. Everyone has the same collection of genes, but with the exception of identical twins, everyone has slightly different versions of some of them. Studies of this genetic diversity have allowed scientists to reconstruct a kind of family tree of human populations. That has revealed the second deep truth: In a very real sense, all people alive today are Africans.

Post the link to the Science News article "Life on Earth may have begun in hostile hot springs" to your virtual classroom. Ask students to read the article for homework and prepare for online class by answering the first question. Before the class meets, provide the students with the links to all articles they will need for class. Class discussion can be conducted via Zoom; the research and recipe-building components can be conducted in breakout rooms.

Male rose-breasted grosbeaks have some red-pink feathers while females' are yellow and brown

o why are these lakes pink anyway? It's been a mystery for some years, but the puzzle's finally been cracked. Scientists found that pink bodies of water like Lake Hillier contain both Halobacteria and a type of algae known as Dunaliella salina, which thrive in salty environments like the pink lakes. The carotenoid red pigments secreted by Halobacteria and d. salina are responsible for the pink lakes' otherworldly colors. These same algae also flourish in the Dead Sea.

Say a red gummy bear has a baby with a yellow gummy bear - what percentage of red and yellow do the parents give to their children? Well, assuming gummy bear genetics works the same way we do, they'll have one set of chromosomes from their mum and one from their dad - so 50 percent from each - easy!

This video follows biologist Shane Campbell-Staton, who is studying the adaptations that allow deer mice living at high elevations to stay warm and active during the winter.

Maps that change in size based on data being examined.

mushrooms releasing spores

Teaching K-12 Science and Engineering During a Crisis aims to describe what high quality science and engineering education can look like in a time of great uncertainty and to support practitioners as they work toward their goals. This book includes guidance for science and engineering practitioners - with an emphasis on the needs of district science supervisors, curriculum leads, and instructional coaches. Teaching K-12 Science and Engineering During a Crisis will help K-12 science and engineering teachers adapt learning experiences as needed to support students and their families dealing with ongoing changes to instructional and home environments and at the same time provide high quality in those experiences.

The alpha-gal-free pig has one express purpose for now: to develop medical products, like blood thinners, that won't set off adverse reactions.

In this project, students will be asked to actually measure the amount of waste that they generate in a week's time (identifying single-use plastic or not) and devise creative ways in which the can reduce, reuse and/or recycle to take an active role in their environment.

But if Gánti's theories had been more widely known during the communist era, he might now be acclaimed as one of the most innovative biologists of the 20th century. That's because he devised a model of the simplest possible living organism, which he called the chemoton, that points to an exciting explanation for how life on Earth began.