# Collections

Classroom collections are ideal for teachers to use in helping students understand concepts. Each resource set includes an outstanding selection of interactives, games, videos and learning tools.
The resources in this collection provide activities in a variety of math content areas that offer students rich problem solving experiences and afford opportunities to develop the habits of looking for and expressing regularity in repeated reasoning. Some resources provide tasks that call for repeated calculations and lend themselves to generalizations; others encourage pattern recognition and shortcut calculations. Some tasks require students to evaluate different strategies and monitor their own solving process. Educators looking for ways advance their own expertise in these areas should draw upon the companion PD collection for Practice Standard 8.
The resources in this collection are challenging puzzles that can be solved offline, and that call for some assembling and/or manipulating by the learner. The collection houses numerical, spatial and logic puzzles. The numerical puzzles not only develop number and operation sense, but involve reasoning skills as well. Some spatial puzzles involve working with shapes and some with transformations. Several resources suggest strategies for introducing and implementing puzzles in the classroom. Mathlanding also hosts a classroom collection of online, Interactive Puzzles.
The resources in this collection are challenging interactive puzzles for use on the computer or interactive whiteboard. The collection houses numerical, spatial and logic puzzles. Several puzzles make connections with science and other STEM topics. Some spatial puzzles involve working with shapes and some with transformations. The numerical puzzles not only develop reasoning skills but also provide repeated practice in basic arithmetic. Several resources suggest reasons for teaching with puzzles and strategies for introducing them into the classroom.
This collection of resources helps to develop algebraic thinking skills for K-2 students. The interactive games and activities emphasize pattern recognition and logical thinking. One activity focuses attention on the patterns in a hundred chart while several others emphasize shape and/or color patterns. Several balance activities introduce basic ideas about equality. Use these resources to begin to build mathematical thinking skills in young students.
This collection of resources helps students develop skill and understanding with measuring. Content topics include length, area, perimeter, volume, weight, time, money, angle, and circle measures. Learning resources include lesson plans, activities, interactive media, investigations, and games. Additional resources are available in two professional development collections on measurement, one for K-2 and the other for 3-5.
The resources in this collection help students develop fluency with number facts. These resources strive to deepen mathematical thinking, develop problem solving, and encourage reasoning and strategic thinking. They take advantage of patterns and number sense. By employing a variety of strategies and representations, they help students make connections, thereby improving retention and transferability. Additional resources for educators can be found in a companion Professional Development collection, "Developing Fact Fluency."