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Preface The Unison Response Activity Understanding "One" through "Ten" Learning to Count from One to Ten Counting by Twos, Threes, Fours More, Less, Equal Addition Facts (on the fingers) Linking Addition and Subtraction Subtraction Facts (on the fingers) Adding and Subtraction with Zero Sums and Differences Involving More than Two Numbers Mastering the Lower Addition and Subtraction Facts:   the "Ten-Chart" Game Mastering the Lower Addition and Subtraction Facts:   the "Nine-Chart" Game Mixed Practice with the 10- and 9- Charts Mastering the Lower Addition and Subtraction Facts:   the "Eight-Chart" Game Mixed Practice with the 10-, 9- and 8- Charts Mastering the Lower Addition and Subtraction Facts:   the "Seven-Chart" Game Mixed Practice with the 10-, 9-, 8- and 7- Charts Mastering the Lower Addition and Subtraction Facts:   the "Six-Chart" Game Mixed Practice with the 10-, 9-, 8-, 7- and 6- Charts Mastering the Lower Addition and Subtraction Facts:   the 5-, 4-, 3- and 2- Chart Games Mixed Practice with All the Charts Counting to 100 and Beyond Vocabulary and Symbolism of Numeration For the Appreciation of the Method for Adding Large Numbers Adding Two Large Whole Numbers (without regrouping) Place Value Comparing Whole Numbers For the Appreciation of the Method for Subtracting   One Large Number from Another Subtracting One Large Whole Number from Another (without exchanging) Equivalent Numerals The Ten-Plus Addition Facts Mastering the Higher Addition Facts without Memorization Adding Any Two Whole Numbers (without regrouping) Preparing for Subtraction with Exchanging Mastering the Higher Subtraction Facts without Memorization Subtracting One Whole Number from another (with exchanging) Place Value Relationships Preparing to "Tell the Truth" when Adding or Subtracting with Whole Numbers "Telling the Truth" when Adding Whole Numbers Using Addition to Solve Word Problems Finding the Missing Number Mental Addition Column Addition