The simulation beeps each time the ball passes one of the vertical red lines. Just like the bells on Galileo's ramp, the positions of three of the vertical red lines can be adjusted. The first line and the last line are fixed in place, but the sliders allow you to adjust the positions of the second, third, and fourth lines. Move the lines around until the beeps occur at regular time intervals (make sure the sound is on, on your computer or mobile device).

This resource consists of a Java applet and expository text. The applet simulates a random sample from a gamma distribution, and computes standard point estimates of the shape and scale parameters. The bias and mean square error are also computed.

This resource consists of a Java applet and expository text. The applet simulates the time of the k'th arrival in a Poisson process. The arrival number k and the rate of the Poisson process can be varied. The applet illustrates the gamma distribution and a special case of the central limit theorem.

In this interactive simulation, students can explore global CO2 emissions displayed by different continents/countries and plotted based on the GDP. A map view is also accessible.

This ebook contains background information, video tutorials and virtual exercises for the Biochemistry Laboratory module. Gas chromatography (GC) and mass spectrometry (MS) are analysis methods that require a lot of background information and intense theory. This interactive ebook will help you understand the information behind these analysis methods, and is accessible through iTunes.

Explore how a particle model of gases works to predict the behavior of a syringe under various conditions.

Pump gas molecules to a box and see what happens as you change the volume, add or remove heat, change gravity, and more. Measure the temperature and pressure, and discover how the properties of the gas vary in relation to each other.

In this dynamic data science game, students try to track down a speck of extremely dangerous radioactive material (the "source"), which has been lost somewhere in the middle of their lab. A special device measures the strength of the radiation and, if it’s positioned correctly over the speck, can be used to collect it for safe disposal. But it's a tiny speck, so they have to give quite precise coordinates. They take measurements to figure out the speck’s location, but must beware: as they take measurements, they're also accumulating radiation exposure. If they get too much, they’ll lose the game and will have to start over. Can they find the source before it’s too late? Using mathematical models, students generate useful strategies for winning the game with data.

Express yourself through your genes! See if you can generate and collect three types of protein, then move on to explore the factors that affect protein synthesis in a cell.

Build a gene network! The lac operon is a set of genes which are responsible for the metabolism of lactose in some bacterial cells. Explore the effects of mutations within the lac operon by adding or removing genes from the DNA.

Build a gene network! The lac operon is a set of genes which are responsible for the metabolism of lactose in some bacterial cells. Explore the effects of mutations within the lac operon by adding or removing genes from the DNA.

Generate electricity with a bar magnet! Discover the physics behind the phenomena by exploring magnets and how you can use them to make a bulb light.

The goal of the Genetic Origins Program is to allow students to use their own DNA variations (polymorphisms) as a means to explore our shared genetic heritage and its implications for human health and society. Genetic Origins focuses on two types of DNA variations: an Alu insertion polymorphism on chromosome 16 (PV92) and single nucleotide polymorphisms (SNPs) in the control region of the mitochondrial (mt) chromosome. With two alleles and three genotypes, PV92 is a simple genetic system that illustrates Mendelian inheritance on a molecular level. PV92 data is readily analyzed using population statistics. The mt control region is one of the simplest regions of human DNA to sequence. With a high mutation rate, the mt control region is the "classical" system for studying human and primate evolution. The Genetic Origins site and linked Bioservers site have all the information needed for students to perform the Alu and mt DNA experiments and analyze the results - including online protocols, reagents, animations and videos explaining key concepts, and database tools.

This science resource covers a variety of topics; however, the specific URL is on Genetics. It has significant explanations on the basic Principles of Genetics, Co-dominance, Incomplete dominance, and Sex-Linked traits. The units have precise and manageable explanations, and there are numerous links and additional resources to support instructors and students to advance learning. The access to videos and online simulations enhances particular areas, and the diverse assessments support mastery of skills.
This is a very purposeful resource on genetics; it is useful to make learning more effective either as an overall instructional method or as an individualized learning supplement.

This activity begins with sections that help students to understand basic principles of genetics, including (1) how genotype influences phenotype via the effects of genes on protein structure and function and (2) how genes are transmitted from parents to offspring through the processes of meiosis and fertilization. Then, a coin flip activity models the probabilistic nature of inheritance and Punnett square predictions; this helps students understand why the characteristics of children in many real families deviate from Punnett square predictions. Additional concepts covered include polygenic inheritance, incomplete dominance, and how a new mutation can result in a genetic condition that was not inherited. This activity helps students meet the Next Generation Science Standards.

Find free activities, simulations, exercises, lessons, and games for math & science!

GeoGebra is dynamic mathematics software for all levels of education that brings together geometry, algebra, spreadsheets, graphing, statistics and calculus in one easy-to-use package. GeoGebra is a rapidly expanding community of millions of users located in just about every country. GeoGebra has become the leading provider of dynamic mathematics software, supporting science, technology, engineering and mathematics (STEM) education and innovations in teaching and learning worldwide.

You are free to copy, distribute and transmit GeoGebra for non-commercial purposes. Non-commercial use is subject to the terms of our GeoGebra Non-Commercial License Agreement.

How does a lens form an image? See how light rays are refracted by a lens. Watch how the image changes when you adjust the focal length of the lens, move the object, move the lens, or move the screen.

This resource demonstrates the distributive property through the area of rectangles. You can manipulate the dimension by moving the slider.

Ana Donevska Todorova Humboldt Universitﾊt zu Berlin Mathematisch-Naturwissenschaftliche Fakultﾊt II Institut fﾟr Mathematik, Didaktik der Mathematik