Mathematics: Number Concepts

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Rekenrek Counting Frame
Practice counting, adding, and subtracting using the red and white beads, The beads slide along the wires providing a great visual model for number concepts. Measures 9”L x 2¾”W x 3”H. Includes activity guide
LER4358 2 Row Frame $4.99
LER4359 10 Row Frame $16.99

Working with the Rekenrek
The Rekenrek is an increasingly popular manipulative to provide students with a strong understanding of early number concepts. Using the Rekenrek, these 48 engaging activities help children master early skills such as counting, subitizing, the decomposition of numbers, and more. Each lesson is correlated to the Common Core content and practice standards and includes step-by-step instructions, suggested assessment questions, and reproducible blackline masters. Also included is a link to a virtual Rekenrek - great for classroom display! 180 pages. Grades K-1.
DD211752 $14.95

Slide Abacus
This modern version of the abacus has beads in five colors and number grids horizontally and vertically on the outer edges of the 9" x 6" frame.
DD81320 $16.95

Number Balance
An easy, visual way to learn equivalents! This T-shaped scale includes 20 weights that visually demonstrate number relationships and operations such as addition, subtraction, and comparisons, as well as pre-algebra concepts. Set includes 20 balance weights and teacher's guide. Gr K-3.
EI1070 $24.99

Math Balance
Students will easily grasp various number concepts because they can see the results! Display number relationships of equal to (=), greater than (>), or less than (<). This balance makes learning number concepts easier because students can see the results. This is a self-checking balance that can display a variety of concepts such as greater than, less than, equal to, and basic operation skills. Comes with twenty 10g weights. Demonstration sized math balance measures 25.5" X 8.66". Student balance measures 14" X 5". Grades 1-6.
CTU25892 Demonstration Size Balance $19.99
CTU7698 Student Balance $8.99

Working with the Math Balance
Using the math balance and the more than 60 activities in this book, students develop a deeper understanding of the arithmetic concepts of quantity; composition and decomposition of numbers; place value; the four operations; and the commutative and associative properties. The activities also support algebraic understanding as students work with variables, equations, and inequalities. Alignment of activities with key math concepts and correlation to the CCSS included. Comes with digital book on CD that includes a virtual math balance. Works on all types of computers and all brands of interactive white boards. 72 pages.
DD211442 $16.95

Hip Hoppin' Hundred Mat
Hop on this oversize version of the familiar hundreds board. This versatile mat will engage a range of kinesthetic learners with its attractive age-neutral design. Reinforces hundreds concepts, counting, number patterns, place value, operations, problem solving and overall number fact fluency. Focuses attention on specific numbers and patterns (such as even and odd) through the use of double–sided, color–coded number frames. Includes 2 inflatable cubes for numerals 1-6 (measuring 5"L x 5H") and 54 square number frames and Activity Guide that offers intervention strategies. Wipe-clean vinyl mat measures 4' x 4'. Grades K+.
LER1100 $29.99

Positive & Negative Number Line Activity Set
Hang to visually demonstrate number and operations skills, or lay flat for kinesthetic center activities. Use with a wet-erase marker to highlight numbers! Shows numbers -25 to 25 horizontally on one side and vertically on the reverse to prepare students for the orientation of Cartesian coordinates in algebra and geometry. Reinforces positive and negative numbers, operations and algebraic equations. Includes 2 magnetic arrows, 2 inflatable vinyl number cubes (5" each) and 10 double-sided, reproducible Activity Cards with answer key. Thick vinyl number line with hanging grommets measures 48"L x 8"H; use with wet-erase marker to highlight numbers. Grades 4+.
LER7696 $27.99

Student Number Lines Desk Tape
These number lines measure 22” x 1.5” each and feature numbers from 0 to 30. They are color-coded for even and odd numbers and feature a write-on/wipe-away surface to make it easy for students to use over and over! A resource guide is also included.
CD4421 $8.99
Number Line Bulletin Board Set
This Number Line Bulletin Board Set supports Common Core State Standards with 14 number line strips with numbers ranging from -20 to 120. Resource Guide included.
CD110215 $12.99

Working with the Number Line
This book contains 40 number line games and activities correlated to the CCSS. Games list appropriate content and practice standards, and can be played as a whole class, in small groups, or in pairs. Blackline masters and interactive CD for whiteboard presentation included. 160 pages. Grades K-1.
DD211578 $16.95

Number Line Stamps
With these stamps, students can make their own number lines as reference tools for their desks. Included in the set: a number line from 1-10, a number line from 1-20, and a number line providing spaces for math problems.
CE913 $16.99

Hundred Board Large Table Top Pocket Chart
Help students understand everything from learning number patterns, odds and evens, skip counting, and simple addition and subtraction. Set includes 144 - 2" x 1 7/8" tiles (0-100 with color-coded extras for multiples of 2, 3, 5, 10), a 19" x 19" nylon stand-up pocket chart with storage pouch, and reference guide.
SME760 $27.99

Hundreds Number Boards
Introduce number patterns, sequencing and place value with this durable plastic Hundreds Number Board with recessed squares. Double-sided board features numbers printed on the front and a plain grid for additional patterning and graphing activities on reverse. Includes 100 numbered white tiles, 25 transparent red tiles and 25 transparent blue tiles. Board measures 12" x 12", tiles measure 1" x 1".
LER1331 $24.99

Hundred Board Books
With this unique hands-on resource, students grab their hundred boards to explore counting and ordering numbers, place value, number patterns, and beginning addition and subtraction. Book features 60 games and activities with accompanying teacher notes. Correlated to the Common Core State Standards. Accompanying CD includes digital book and virtual hundred boards to show activities on an interactive whiteboard. 136 pages. $16.95 Each
DD211333 Grades K-2
DD211399 Grades 3-4
DD211580 Grades 5-6

Laminated Hundred Boards
Two-sided 11" x 11" cards provide 1" number squares from 1 to 100 on one side with blank grid on the reverse. Set of 10.
LER0375 $9.99

Multiplication Chart Stamp
Quick multiplication chart.
CE924 $4.99
1-100 Chart Stamp
Numbers 1-100 in a block grid. Great for quick reference.
CE925 $4.99
100 Block Stamp
100 block grid for students to create their own number grid.
CE926 $4.99
Multiplication & Hundred Chart Set
Set of all 3 stamps.
CE923 $14.75

Whole Number Dice
Set contains 3 dice 1 to 6 and 3 dice 7 to 12 along with two operator dice. Practice basic math operations.
KOP11701 $5.00

Positive/Negative Dice
Classroom set of 31 dice. Includes assorted fractions, whole numbers, operators and polyhedrals. Will answer the need for math manipulatives and challenge the mind!
KOP11702 $18.00