Brush up on your multiplication, division, and factoring skills with this interactive multiplication chart. Three levels and timed or untimed options are available.

This this task about mixing paint requires students to graph ratios on a coordinate plane. It is a standard language in ratio problem.

This this task about mixing paint requires students to graph ratios on a coordinate plane. It is a standard language in ratio problem.

This activity is designed to determine the appropriate instructional level for a student in a one-on-one interaction with the teacher.

This activity is designed to determine the appropriate instructional level for a student in a one-on-one interaction with the teacher.

In this assessment in a one-to-one setting, a student is shown the numbers from 1Đ10, one number at a time, in random order. The teacher asks, Ňwhat number is this?"

This assessment task can be used with a single student or a small group of students. Each student needs his or her own set of numeral cards.

This assessment may be used in a small group or whole group setting, give each student a piece of paper. Students who have trouble writing certain numbers can then get targeted practice.

Explore the interactions between various combinations of two atoms. Turn on the force arrows to see either the total force acting on the atoms or the individual attractive and repulsive forces. Try the "Adjustable Attraction" atom to see how changing the parameters affects the interaction.

Explore the interactions between various combinations of two atoms. Turn on the force arrows to see either the total force acting on the atoms or the individual attractive and repulsive forces. Try the "Adjustable Attraction" atom to see how changing the parameters affects the interaction.

Short Description:
This guide is for faculty authors, librarians, project managers and others who are involved in the production of open textbooks in higher education and K-12. Content includes a checklist for getting started, publishing program case studies, textbook organization and elements, writing resources and an overview of useful tools.

Long Description:
This guide is for faculty authors, librarians, project managers and others who are involved in the production of open textbooks in higher education and K-12. It includes a checklist for getting started, publishing program case studies, textbook organization and elements, writing resources and an overview of useful tools.

Contributors include: Karen Bjork, Head of Digital Initiatives, Portland State University Library. Caitie Finlayson, Assistant Professor, Department of Geography, University of Mary Washington. Dianna Fisher, Director of Open Oregon State. Linda Frederiksen, Head of Access Services, Washington State University, Vancouver. Ralph Morelli, Professor, Computer Science, Emeritus, Trinity College. Shane Nackerud, Technology Lead, Library Initiatives, University of Minnesota Libraries. Deb Quentel, Director of Curriculum Development & Associate Counsel, Center for Computer-Assisted Legal Instruction (CALI). Cody Taylor, Emerging Technologies Librarian, University of Oklahoma Libraries. Anita R. Walz, Open Education, Copyright & Scholarly Communications Librarian, Virginia Tech.

The authors invite the open textbook community to contribute their experience and knowledge for future editions of this guide. If you would like to offer additional case studies, frameworks and examples, please email open@umn.edu. Together we can create a flexible resource to support open textbook creation in a variety of contexts.

Word Count: 15985

(Note: This resource's metadata has been created automatically by reformatting and/or combining the information that the author initially provided as part of a bulk import process.)

In this real world problem students solve questions based on the relationship between production costs and price.

5th grade students work together in teams to create an ecosystem to support Pacific Northwest pollinators.

This task provides a real world context for interpreting and solving exponential equations. There are two solutions provided for part (a). The first solution demonstrates how to deduce the conclusion by thinking in terms of the functions and their rates of change. The second approach illustrates a rigorous algebraic demonstration that the two populations can never be equal.

This series of word problems requires students to apply the concepts of factors and common factors in a context.

Play with objects on a teeter totter to learn about balance. Test what you've learned by trying the Balance Challenge game.

How do you know if a chemical equation is balanced? What can you change to balance an equation? Play a game to test your ideas!

Experiment with a helium balloon, a hot air balloon, or a rigid sphere filled with different gases. Discover what makes some balloons float and others sink.