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##### Modeling the Structure of DNA

In this activity, students build a paper model of DNA and use their model to explore key structural features of the DNA double helix. This activity can be used to complement the short film The Double Helix.

##### Photosynthesis

This multipart animation series explores the process of photosynthesis and the structures that carry it out.

##### Cystic Fibrosis Mechanism and Treatment

This animation shows how mutations in an ion channel protein lead to the genetic disease cystic fibrosis. The animation also discusses how research on this protein has been used to develop treatments for the disease.

##### BiomeViewer

This interactive module explores biomes, climate, biodiversity, and human impacts around the globe and at different times.

##### Amylase Copy Number and Diet

This activity guides the analysis of a published scientific figure from a study that investigated whether there is a correlation between a population’s diet and copies of a certain gene.

In this activity, students explore different ways of calculating t-values and performing t-tests using built-in functions in Excel or Google Sheets. Students apply what they learned by plotting beak size measurements of Galapágos finches collected before and after a drought.

In this activity, students explore different ways of constructing a histogram using Excel or Google Sheets. Students apply what they learned by plotting beak size measurements of Galapágos finches before and after a drought.

##### Trends in Atmospheric Carbon Dioxide

This activity analyzes a figure showing the atmospheric carbon dioxide concentration from 1958 to 2016.

##### Sampling and Normal Distribution

This interactive simulation allows students to graph and analyze sample distributions taken from a normally distributed population.

##### Spreadsheet Tutorial 1: Formulae, Functions, and Averages

In this activity, students use the built-in functions in Excel or Google Sheets to calculate the mean and median. Students apply what they learned to a dataset beak measurements of Galapágos finches.

##### Spreadsheet Tutorial 2: Autofill Data, Cell References, and Standard Deviation

In this activity, students use the built-in functions in Excel or Google Sheets to explore different ways of filling in cells with a series of numbers, copying and pasting formulae, and referencing individual cells to use in calculations.

##### Spreadsheet Tutorial 3: Column Graphs, Error Bars, and Standard Error of the Mean

In this activity, students explore different ways of creating simple bar graphs and adding error bars from calculated statistical values using built-in functions in Excel or Google Sheets.