If you’ve ever been in a chemistry lab, you likely noticed the wide variety of glassware for use in experiments. Not all glassware is equal, however. The specific glassware you’ll use in a particular experiment will depend on the exact measurements and tasks required to complete that experiment. For example, when measuring a volume of solvent to dissolve a solid, the amount of solvent used does not usually need to be exact.
Read MoreA titration is a lab technique used to determine the volume of a solution that is needed to react with a given amount of another substance. In this activity, your goal is to determine the molar concentration and strength of two acid solutions by conducting titrations with a base solution of known concentration.
Read MoreBrood X is coming. This year in the eastern United States from Tennessee to New York billions of cicadas are expected to emerge en masse. These insects have spent the last 17 years underground, tunneling and drinking sap from tree roots roughly eight feet beneath the surface.
Read MoreThe spread of the COVID-19 pandemic in the United States has pushed public health issues to the forefront of the national dialogue in the US like never before. As millions of Americans have contracted COVID-19 and hundreds of thousands have succumbed to the virus, the first line of defense to slow the spread of the virus and save lives has been social distancing measures. Unfortunately, such measures have presented very specific challenges to fighting the ongoing opioid epidemic.
Read MoreWhen we represent chemical reactions using balanced equations, the quantities of the reactants will always be fully consumed in order to produce the quantities of the products in the equation.
Read MoreYou are what you eat. Biologically speaking, that old saying is literally true. By studying what fish (and other consumers) are made of, we can determine what they eat and thus their position in the food web.
Read MoreGrandma says, “Thanksgiving dinner gets more expensive every year!” Is she right?
Read MoreEvolutionary pressures impact all living organisms. Even among single-celled bacteria, only the fittest survive.
Read MoreIn this activity, we’ll use lab data to test the hypothesis that lectin promotes mitosis in onion roots.
Read MoreBecause oxygen is one of the byproducts of photosynthesis, we can measure the rate of photosynthesis in leaves by observing the release of oxygen. When we submerge leaf discs cut using a hole-punch in a baking soda solution, we can see the effect of oxygen gas being produced.
Read MoreA classic introductory lab for both conceptual and upper-level physics that will work as an online version of the classic lab activity. Fast. Slow. Forward. Backward. Speeding up. Slowing down. Turning. Stopping. Going. How can we quantify those words and turn them into numbers or even a graph?
Read MoreThe Hardy-Weinberg equation is a relatively simple mathematical equation that describes a very important principle of population genetics: the amount of genetic variation in a population will remain the same from generation to generation unless there are factors driving the frequencies of certain alleles (genetic variants) to change. We know that in reality…
Read MoreSeventeen Digital Data Nuggets are available on DataClassroom and let your students easily make multiple graphs and explore multiple ways to visually represent data.
Read MoreIt can be important to be precise! Data can help cut through misinformation, but only if we are careful with our language and our numbers. Many are talking about Hydroxychloroquine as a “cure” for COVID-19, when in fact it is only being tested to help stop the spread of the virus after a known exposure. Thankfully, data can help us answer whether or not it is actually doing this.
Read MoreHow can data recorded during traffic stops in the state of Missouri that includes racial information about those being stopped help us to understand the extent to which institutional racism is evident in traffic enforcement practices in that state and beyond?
Read MoreProfessional sports leagues have to maintain competitive balance in order to uphold the values of the sport that fans cherish. This is often difficult to do when these sports teams also exist to make a profit and winning can greatly affect a team’s bottom line.
Read MoreThere are many ways to measure environmental quality and the health of an ecosystem. The use of biological assessment is often both a practical and powerful way to measure the health of an ecosystem. One commonly used biological assessment used the measure the health of streams and small rivers around the world is sampling benthic macroinvertebrates
Read MoreThe Chi-Square Goodness of Fit test is often the gateway to inferential statistics in high school. It appears in both the AP Biology and AP Statistics curricula and is one of the few statistical tests for which the test statistic can be easily calculated by hand even for datasets with a large number of samples.
Read MoreThe familiar scaled bar graph is a good place to start with middle school students who are learning to work with data in the digital environment.
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