For this comparing ratios worksheet, students solve and complete 3 different problems using the screens shown. First, they write a ratio that compares the shaded part to unshaded part illustrated. Then, students use the same grid to...

Students separate a mixture of pigments with ion exchange chromatography and predict whether the ion-exchange matrix is positively or negatively charged based on the type of pigment bonded to the matrix.

For this acid-base worksheet, students calculate the pH of given solutions and determine if given solutions are acids, bases, or neutral. This worksheet has 3 graphic organizers and 4 problems to solve.

Students examine what happens to salt water when it freezes. In groups, they measure density and salt concentrations in different samples of water and record its freezing time. They discuss the relationship between water density and...

Students witness an demonstration in which a bottle of club soda will go from a liquid to a solid when it is opened and the carbon dioxide is allowed to escape. This will help them understand that the freezing point of a solution will...

Students comprehend the four parameters of water quality. They perform tests for salinity, dissolved oxygen, pH and clarity or turbidity. Students comprehend why scientists and environmental managers monitor water uality and aquatic...

Students use a machine called a spectrophotometer to determine how much light is absorbed by certain substances. Students record the absorbance and the % of light transmitted for different color solutions, graph their results, and then...

Learners define the term acid rain, and the causes of acid rain. They locate regions where acid rain is most affected, and what can students deduce from maps of geology and soils in New York State. Learners answer the questions why are...

Ninth graders study pH, acids, bases, and neutralization. They discuss and apply principles of neutralization to everyday situations (bee stings, indigestion remedies, soil acidity, etc.). They carry out several experiments using acids...

Students conduct an experiment to determine the distance between touch receptor fields in parts of the right-hand side of the body. They enter data into the data table.

Fourth graders model the activity of an enzyme acting on a substrate and observe relationships. Have students place toothpicks in a pile. One member of the team should break as many toothpicks as possible, in 10 seconds.

Young scholars examine the concepts of light and chlorophyll. They participate in an experiment in which the chlorophyll shows as a red ring on the test tube. They answer discussion questions to end the lesson.

Students define density and explain how to determine the density of an object. Students participate in a demonstration that shows the differences in the densities of different liquids and how they affect the liquid's physical properties.

Young scholars explore DNA recombination. For this biology lesson, students observe the growth of microscopic species. They predict the phenotype of the transformed colonies.

Students convert mole to mass to particles and vice versa. In this chemistry lesson, students discuss the importance of Avogadro's number. They apply what they have learned in a team competition.

After taking in background information on teeth, marble, eggshell, and fluoride, chemistry aces design an experiment. Their goal is to demonstrate whether or not fluoride has a similar effect on marble or eggshell as it does on tooth...

Students observe a demonstration performed by the teacher. They examine of a series of acid/base reactions and discover how various indicators work.

Students examine the following concepts: If water supplies contain materials which rot or decompose, oxygen is used. Decay and decomposition require vast supplies of oxygen. The use of oxygen for decay of wastes may be a life or death...

Students use scientific methods to investigate the concept of DNA. They observe the DNA of human cheek cells. This is done with the use of a lab experience. Students record their observations and reflect upon on how each organism is...

Students participate in an experiment to define a parts-per-billion solution. For this ecology lesson, students select a second substance to create a parts-per-billion solution and observe and record their results. Students work in...

Students participate in an activity of a mock electrophoresis using paper chromatography to study DNA and genetic restriction mapping.

Twelfth graders compare the permanence of papers by testing pH, determining presence of alkaline reserve as well as fold endurance, and testing lignin content. They indicate the strength by using a starch test as a comparison.

Students devise the solutions to the radon problem. They consider how radon enters homes and the air flow patterns within them while focusing on the fact that the ultimate source of radon is the rocks and soils under the house. They...

Students write online responses to the Literature they are reading in class using computers, internet access, and the Blog website www.blogger.com. This technology based language arts lesson can be adapted for many different areas of...