A historic look at the earliest wave of Russian immigration to the United States, which began in the late nineteenth century and continued up to the passage of restrictive immigration laws in the 1920s. With details about how World War I...

These lesson plans are based on California State Standards, including handouts, activities, and suggested extension activities. Requires Adobe Reader.

In this interactive map, learn how life expectancy, obesity, hypertension, and physical activity rates have changed dramatically throughout the United States over the last three decades.

The Iran Project examines the changes in modern Iran since 1981. This project includes a one-hour public radio documentary, "The Struggle for Iran," as well as a detailed overview of the country. Click "About Iran" to learn about this...

Use this interactive infographic to learn about the function of greenhouse gases, and how they affect heat in the atmosphere.

This step-by-step tutorial walks students through the effects of ocean acidification on some shelled marine organisms.

Explore methods for calculating and comparing discounts in this video from KQED. In the accompanying classroom activity, students develop different strategies for calculating and comparing discounts, including percent off a price,...

Learn how to calculate percent as a rate per 100 in this video from KQED. In the accompanying classroom activity, students model percent with a 10 x 10 grid. After watching the video, they create a design or picture on a 10 x 10 grid,...

In these KQED Lowdown infographics, explore how adult obesity rates in the United States, as measured by body mass index (BMI), have dramatically changed in the past half-century. A circular graph and a pictograph depict data by decade,...

Explore a real-life application of percentage-the math behind rates of inflation-in two animated videos about inflation from KQED. The first video provides an overview of inflation; the second explains the role of inflation in a healthy...

Compare data about indoor and outdoor residential water use in northern and southern sites in this infographic from KQED and the California Single Family Water Use Efficiency Study. The accompanying classroom activity helps students find...

Explore the math of worldwide food waste, with focus on percentage, in this infographic from KQED. In the accompanying classroom activity, students predict the percent of food in each of the various categories (e.g., grains, fruit, etc.)...

Explore how credit cards work in this video from KQED. In particular, you'll discover the impact and high cost of outstanding balances when borrowing money using credit cards. In the accompanying classroom activity, students discuss the...

Learn how to calculate sale price when combining two "percent-off" discounts in this video from KQED. In the accompanying classroom activity, students develop and share a variety of strategies, including modeling with a 10 x 10 grid to...

Rock out to a musical demonstration of math involved in constructing rhythms from groups of beats in this video from KQED. In the accompanying classroom activity, students consider how the note durations comprising a measure in 3/4 time...

In this KQED infographic, find out how much an adult in different-sized households needs to make to pay for basic monthly living expenses. In the accompanying classroom activity, students solve real-life problems involving rate and ratio...

Use math to learn about changes in US wealth distribution and poverty rate over time in this interactive from KQED. In the accompanying classroom activity, students interpret the graphs and consider how the poverty rate spike following...

Investigate data on changes over time in where our apparel is made and how much we spend on it in these images from KQED. In the accompanying classroom activity, students use the interactive and graph the data. They also look for...

Interpret graphs showing changes over time in the percentage of foreign-born US residents and in annual deportations in this interactive from KQED. In the accompanying classroom activity, students use the interactive and look at how...

Explore firearm deaths in the United States in 2010 by type, race, and age group in this interactive from KQED. In the accompanying classroom activity, students are presented with a simple question: Is America a safe place to live? In...

In this infographic from KQED, examine age, gender, and race in California's prison population to note the inconsistencies between who is in the general population and who is serving time behind bars. In the accompanying classroom...

Discover how percents and proportions help explain issues like climate change, composting, and zero waste in this video from KQED. In the accompanying classroom activity, students estimate the percentage of various types of trash that...

PBS American Portrait is a national storytelling project that invites individuals to participate in a conversation about what it really means to be an American today. To answer this question, PBS and its partners are collecting photos,...

PBS site invites you to join Jean-Michel Cousteau's team as they journey along with a team of gray whales as they make their way to Alaska.