MP1 Make sense of problems and persevere in solving them.
MP2 Reason abstractly and quantitatively.
MP3 Construct viable arguments and critique the reasoning of others. Math.
MP4 Model with mathematics.
MP5 Use appropriate tools strategically.
MP6 Attend to precision
MP7 Look for and make use of structure.
MP8 Look for and express regularity in repeated reasoning.
L1 Addition Properties p. 11
L2 Count On to Add p.17
L3 Doubles and Near Doubles p. 23
L4 Make a Ten p. 29
L5 Add Three Numbers p. 35
L6 Write a Number Sentence p. 41
L7 Count Back to Subtract p 49
L8 Subtract All and Subtract Zero p. 55
L9 Use Doubles to Subtract p. 61
L10 Relate Addition and Subtraction p. 69
L11 Missing Addends p. 75
L12 Fact Families p. 81
L13 Two-Step Word Problems p. 87
L1 Skip Count on a Hundred Chart p. 107
L2 Skip Count by 2's, 5's, and 10's p. 113
L3 Problem-Solving Strategy; Find a Pattern p. 119
L4 Repeated Addition p. 127
L5 Repeated Addition with Arrays p. 133
L6 Even and Odd Numbers p. 139
L7 Sums of Equal Numbers p. 145
L1 Take Apart Tens and Add p. 165
L2 Regroup Ones as Tens p. 171
L3 Add to a Two-Digit Number p. 177
L4 Add Two-Digit Numbers p. 185
L5 Rewrite two-Digit Addition p. 191
L6 Add Three of Four Two-Digit Numbers p. 197
L7 Problem-Solving Strategy; Make a Model p. 203
L1 Two-Digit Fact Families p. 223
L2 Take Apart Tens to Subtract p. 229
L3 Regroup a Tens as Ones p. 235
L4 Subtract From a Two-Digit Number p. 241
L5 Subtract two-Digit Numbers p. 249
L6 Rewrite Two-Digit Subtraction p. 255
L7 Check Subtraction p. 261
L8 Problem-Solving Strategy: Write a Number Sentence p. 267
L9 Two-Step Word Problems p. 273
L1 Take Apart Hundreds to Subtract p. 413
L2 Subtract Hundreds p. 419
L3 Mentally Subtract 10 or 100 p. 425
L4 Regroup Tens p. 433
L5 Regroup Hundreds p. 439
L6 Subtract Three-Digit Numbers p. 445
L7 Rewrite Three-Digit Subtraction p. 452
L8 Problem-Solving Strategy; Write a Number Sentence p. 457
L9 Subtract Across Zeros p. 463
L1 Inches p. 645
L2 Feet and Yards p. 651
L3 Select and Use Customary Tools p. 657
L4 Compare Customary Lengths p. 665
L5 Relate Inches, Feet and Yards p. 671
L6 Use Logical Reasoning p. 677
L7 Centimeters and Meters p. 685
L8 Select and Use Metric Tools p. 691
L9 Compare Metric Lengths p. 697
L10 Relate Centimeters and Meters p.703
L11 Measure on a Number Line p. 709
L12 Measurement Data p. 715
Thank you Amanda Lockwood and Heidi Walker-Lynch for your valuable contributions to this website.