This collection includes 27 videos, 2 interactives, and 2 media gallery about counting and numbers. Peg and Cat are always learning a thing or two (or three or four or more!) from their chicken friends. On the farm in The Chicken Problem, the problem-solving duo must round up 100 unruly chickens by choosing wheelbarrows that are just the right size. And when those chickens make a surprise appearance in outer space in The Space Creature Problem, Peg and Cat must count by tens all the way to 100 to save them from the hungry space monster, Big Mouth.

Learn about problem solving and patterns with the Odd Squad. Ms. O remembers using patterns to solve an important case when she was still an agent in the 1980s.

The lesson begins by introducing Olympics as the unit theme. The purpose of this lesson is to introduce students to the techniques of engineering problem solving. Specific techniques covered in the lesson include brainstorming and the engineering design process. The importance of thinking out of the box is also stressed to show that while some tasks seem impossible, they can be done. This introduction includes a discussion of the engineering required to build grand, often complex, Olympic event centers.

PBS In The Mix offers a lesson plan on peer mediation, which is a formalized way of presenting problem solving.

Identify simple principles of physical science and engineering by exploring ramps and things that roll. Predict which items will slide or roll down a ramp and test your predictions.

Construct a device to measure the height of a bounced ball, then compare the bouncing heights of various types of balls. Record the results on a chart.

In this interactive activity from the Web site developed for the PBS series "Building Big," investigate hypothetical structural emergencies and figure out how to repair them. [This resource is available on PBS Learning Media. Free registration is required.]

This activity is a guided inquiry where students investigate the colors contained within a single marker color and interpret what this means about the sizes of the molecules.

This activity is an experimental investigation in which students use paper helicopters to examine types of variables and how to manipulate variables in experimental design.

Peg + Cat Camp engages preschoolers in fun, informal learning experiences in math and problem-solving. By incorporating friendly PBS characters, engaging activities, and social-emotional strategies, children learn to work as a team, creatively approach problems, use mistakes as learning opportunities, and persist through challenges. This collection includes 6 media gallery and 6 documents.

Peg and Cat are helping the Farmer today, and they have a lot of work to do! Today's activities include welcoming campers, introducing camp, sorting animals, collecting 100 chickens, planting vegetables, and solving some really big problems! Throughout the day, campers will practice counting and sorting. Day 1 materials are part of a five-day camp. A full version of the camp curriculum is available in the "Resources" media gallery in the Peg + Cat Camp collection.

Children learn counting, operating with numbers, and fair sharing in this video fromPeg + Cat. Ramone helps Peg and Cat divide peaches among four hungry, cranky pirates so that everyone gets their fair share. [2:47]

This activity is a method of tying a multitude of physical (and chemical) properties together showing what makes a substance unique and identifiable. This activity is a great way to lead the students into developing their procedures, their further investigations, and yet giving them the feeling of responsibility and ownership for their learning.

Learn about the analysis of parallel circuits in the context of a realistic household circuit using our interactive simulation. A PDF worksheet and a video tutorial are also available. [3:24]

A free CK-12 account is required to view all materials.

Learn about different ways you can wire an electric circuit, and how the brightness of the lights depends on how they are configured using this interactive simulation. A PDF worksheet and a video tutorial are also available. [4:25]

A free CK-12 account is required to view all materials.

Students use the free computer game Pingus to learn how engineers, specifically environmental engineers, use their technical writing skills to give instructions and follow the instructions of others. Students learn to write instructions to express their ideas in clear, organized ways using descriptive, un-ambiguous sentences, as an example of one type of technical writing that important for engineers. The students write instructions enumerating how to beat a game level, which represents surveying that level for environmental problems. As a test of their instructions, students review each others' instructions and offer suggestions for improvement, and then revise their instructions to make them better. Students also see some examples of environmental problems.

Analyze spending, research costs, and plan for purchases using a spreadsheet. Time to complete: 7-9 hours

This activity is a first grade life science activity where the students practice inquiry skills by developing questions about seeds, planting them and noting details about how they change as they grow.

These weekly activities are cross-curricular but emphasize Social-Emotional Learning, Math, and Literacy development. This week (February 15th), we are working on treating others fairly.

CK-12 Advanced Probability and Statistics Teacher's Edition provides tips and enrichment activities for teaching CK-12 Advanced Probability and Statistics Student Edition. The solution and assessment guides are available upon request.