K-8 Guided Student Discovery Math
for Adding and Subtracting
Our Books

Multiplying and Dividing
* The Best Stuff for Multiplying & Dividing
* Sharing Big Numbers
* Teams
Discover the Basics - Multiplying & Dividing

Adding and Subtracting
* Addition, Subtraction, & Place Value
* The Best Stuff for Adding & Subtracting
Discover the Basics - Adding & Subtracting

Fractions and Decimals
* Fractions & Decimals

Percents, Ratios, and Rates
* Percents, Ratios, & Rates

Access to Algebra
* Discover the Basics - Equations!
* Discover the Basics - Negative Numbers
* Discover the Basics - Squares, Roots, & Exponents
*Access to Algebra

Organizing and Graphing Data
* Organizing & Graphing Data

Measurement and Geometry
* Measurement & Geometry
* Discover the Basics - Perimeter, Area, & Volume

Math Intervention Strategies

How it Works
Discover and Perfect the power of Guided Student Discovery

Adding and Subtracting

512: The Best Stuff for Adding & Subtracting,
420 pages - $74.95

This is an ideal resource for remedial students, K - 2. There is a lot of material for students to learn to recognize amounts and numerals, and learn to count with a built-in sense of place value. The concepts of addition and subtraction are made abundantly clear with a variety of tactile/visual manipulative strategies. Fluency with the facts is developed from the basis of understanding born of experience. Also addressed is regrouping (borrowing and carrying) missing addends, place value with larger numbers, reading clocks, and even and odd numbers.

Sample Chapter Headings

  • Plus and Minus 1, Plus and Minus 10
  • Things That Make Up 10 and 20
  • Plus and Minus 2, Plus and Minus 20
  • Regrouping: Carrying Multiple Digits
  • Plus and Minus 8, 80, 800, 8000


The 1999 California State adopted Adding and Subtracting supplemental text.
Mastery Learning Systems, 532 N. School Street, Ukiah, CA 95482, 800-533-4181, mastery@pacific.net