Students often come to a principles course in economics with knowledge that is not correct. This example asks students to guess the percent of federal expenditures for different spending categories. They are then shown the actual percentages. The student results can be the source of a class discussion on why many of their initial estimates were wrong (as they generally are). Students can also create their own budget by changing the amounts spent in each category. Budget Explorer, implemented over the internet, uses data from the Public Budget Database of the White House Office of Management and Budget.

In this Spreadsheets Across the Curriculum module, students build spreadsheets and draw graphs to explore a chemical buffer's ability to resist pH change, i.e., the buffer capacity. Quantification of buffer capacity is conceptually straightforward but involves multiple repetitive calculations. The key relationship is the Henderson-Hasselbalch equation: , which follows from the Law of Mass Action and The spreadsheets automate many of the calculations, thereby simplifying the process. Instead of focusing on the calculations, students can see what buffer capacity means and focus on the a deeper understanding of its implications. After reviewing several buffer calculations, the stduents use the spreadsheet to investigate buffer capacity graphically and characterize blood's physiological buffer system. While solving the question of how many breaths one can take before alkalosis sets in, the students manipulate a logarithmic equation, do "what if" modeling, and analyze rates of change from plots of their cacluated results.

This activity is a biology lab investigation where students create habitats to observe decomposers in a controlled setting.

This classroom activity where students physically show where the forces are in an arch.

This is a hands-on activity to assess the students understanding of peptide and disulfide bonds formed during protein synthesis. Students demonstrate the process of dehydration synthesis by combining amino acids through peptide bonds creating molecules of water, and one protein amino acid strand. It can also be used to assess students understanding of the process of translation.

Undergraduate student project for building datasets and analyzing the electoral, party system, and mass behavioral characteristics for a set of countries.

Students construct electromagnets and determine that the more winds of wire coil around the core will increase the strength of the electromagnet.

This activity is a guided discovery where students gather information on how to add a seat belt to a clay figure that is sitting on top of a toy car. The clay figure should stay in place when it hits a speed bump placed after a ramp.

This activity is a lab where students gather data on buoyant force and height of and object being submerged in two different types of fluids. The slope of the buoyant force and height is proportional to the density of the fluid. Students compare the densities of the fluids calculated with the actual densities.

In this listening comprehension exercise, students of intermediate level French language listen to a podcast interview and complete a questionnaire to check their listening comprehension and enlarge their vocabulary on health topics.

A lab where students determine the molarity of sugar and citric acid in samples of lemonade.

Students will discover the terminal velocity to mass relationship and use this information to calculate the air resistance constant. They will evaluate the accuracy of their lab using the Monte Carlo method.

This activity is a project-based inquiry where students design and create a machine to complete a task. Then students will be asked to calculate velocities, kinetic energy and potential energies of various parts of their machine.

This learning activity is designed to give nursing students confidence and skill with calculating safe dose medication ranges used in the clinical setting. It is designed to supplement textbook and classroom information.

This example focuses on six letters to the editor. All six letters attempt to describe and compare the amount of taxes paid on two different incomes: $30,000 and $200,000. Tax rates are expressed in absolute dollars, tax per $1,000 of income, $1 of tax per income amount, and as percents of annual income. Students need to be able to organize the relevant information and convert each stated tax rate to a standard form to help make comparisons. Additionally, students need to be aware that letter writers may make their own mistakes!

Students will observe the patterns of apparent motion of the sun using simple tools.

This activity enables students to calculate the speed of sound in a laboratory setting.

This online game activity allows the learners to calculate their carbon footprint using a French language calculator developed by a Swiss environmental organization. Students will describe their results in French and engage in related expansion activities for the language class.

Spreadsheets Across the Curriculum activity. In advance of an actual lab activity, students virtually simulate the calibration of a laboratory micropipettor. QL: Accuracy and precision.