Radioactive Decay: A Sweet Simulation of a Half-life PiccoloNamek [GFDL or CC-BY-SA-3.0], via Wikimedia Commons Purpose To demonstrate that the rates of decay of unstable nuclei can be measured, that the exact time that a certain nucleus will decay cannot be predicted, and that it takes a very large number of nuclei to find the rate of decay. Context This is the second lesson in a three-lesson series about isotopes, radioactive decay, and the nucleus. The first lesson, Isotopes of Pennies, introduces the idea of isotopes. To do this lesson and understand half-life and rates of radioactive decay, students should understand ratios and the multiplication of fractions, and be somewhat comfortable with probability. In this lesson, students will be asked to simulate radioactive decay by pouring small candies, such as plain M&M's® or Skittles®, from a cup and counting which candies fall with their manufacturer's mark down or up. This lesson can be done in two, 45-minute class periods. Planning Ahead Motivation Development Ask students: Assessment
Pendulum Lesson Plans Reviewed by Teachers Why Select Other Criteria? Sometimes you only have 45 minutes to review participles before Tuesday's assembly, or you need curriculum you know was reviewed after a certain date. Duration: If curriculum authors indicate how long it takes to implement a resource, i.e. a 30-minute vocabulary exercise, a three-day science experiment, or a two-week expository writing project, we note it for you. If not, our teacher reviewers may indicate an estimated amount of time it would take. When you select a duration in this box, you'll see only resources with that stated duration. Resource reviews that do not include a duration will be excluded from the list. Reviewed After: Limit the resources you see to those reviewed since the date you choose by clicking the box and making a selection.
Giant Pandas Sign up to get panda news from the Zoo. Giant pandas are black and white bears that live in temperate-zone bamboo forests in central China. Among the best recognized—but rarest—animals in the world, they have come to symbolize endangered species and conservation efforts. As few as 1,600 giant pandas survive in the mountain forests of central China. More than 300 pandas live in zoos and breeding centers around the world; most of these pandas are in China. Giant pandas Mei Xiang and Tian Tian are at the National Zoo under a Giant Panda Cooperative Research and Breeding Agreement, signed in January 2011, between the Zoo and the China Wildlife Conservation Association. Seeing Pandas at the Zoo Giant panda cub Bao Bao is now on exhibit! The panda house at the David M. Visitors will be allowed into the panda house on a first-come-first-served basis. Due to the expected number of visitors to see Bao Bao, Asia Trail will be open to one-way traffic only. It was an exciting day at the David M.
Planets Ask Marshall Brain Library Ask Marshall Brain Library A man accidentally cuts off his finger during your woodworking class. You stop the bleeding, call 911 and ice the severed finger. Because of your quick actions, surgeons are able to reattach the finger. But why do we need surgeons? We've all had that bloated feeling. A newborn needs as much as 20 hours of sleep a day while most adults can get by on seven to nine hours. At the end of a track run, a dragster is going more than 300 miles per hour. In "Star Wars" and other movies, characters can be seen using telekinesis; they move an object or objects with their minds. You may have heard of something called genetic engineering. Hours after competing in a radio station contest to win a Nintendo Wii, 28-year-old Jennifer Strange was found dead in her California home. Don't tell us you haven't pondered this question. If you’ve ever seen a crime show or a police drama on TV, you’ve probably seen some pretty unbelievable technology. What is mistletoe?
Radioactive Decay: A Sweet Simulation of Half-Life PiccoloNamek [GFDL or CC-BY-SA-3.0], via Wikimedia Commons Introduction In this simulation, you will use small pieces of candy marked on one side. They will be your “nuclei.” 1. 2. 3. 4. Analysis:1. Matter Worksheets - Solid, Liquid, and Gas STW Filing Cabinet Logged in members can use the Super Teacher Worksheets filing cabinet to save their favorite worksheets. Quickly access your most commonly used files AND your custom generated worksheets! Please login to your account or become a member today to utilize this helpful new feature. :) [x] close This document has been saved in your Super Teacher Worksheets filing cabinet. Here you can quickly access all of your favorite worksheets and custom generated files in one place! Click on My Filing Cabinet in the menu at the upper left to access it anytime! Grade Level Estimation Title: Grade Level Estimation: 1st2nd3rd4th5th Grade level may vary depending on location and school curriculum. Common Core Standards Common core standards listing. All common core standards details. If you think there should be a change in the common core standards listed for this worksheet - please let us know. [x] close Matter Article Free What's the Matter? Tell whether each item is a solid, liquid, or gas.
Pages — Beyond Weather & The Water Cycle Why the North Pole Is Really a South Pole (and Vice Versa) Want to stay on top of all the space news? Follow @universetoday on Twitter If you go out hiking this weekend and somehow find yourself hopelessly lost in the wilderness, but suddenly remember you have a compass with you, you can use it to find north because the needle always points towards the Earth’s geographic north pole, which never changes… right? Wrong, wrong, and wrong. (But still bring a compass with you. See more videos from MinutePhysics here. About Jason Major A graphic designer in Rhode Island, Jason writes about space exploration on his blog Lights In The Dark, Discovery News, and, of course, here on Universe Today. Tagged as: compass, Earth, magnetic, magnetism, Minute Physics, north pole