Arithmetic 1 1st Grade 1 Mathematics Student Work Text

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• Using delightful themes and full-color illustrations, Arithmetic 1 presents concepts in an orderly manner, building on prior learning and including consistent year-long review. Concepts include counting, writing and reading numbers, place value, addition and subtraction, money, graphs, measurements, time, temperature, and fractions. Applications to real-life situations and daily thinking questions stretch the students’ reasoning ability.
• NEW NUMBERS CONCEPTS INTRODUCED INCLUDE: recognizing numbers 101-1,000; counting forward and backward by ones, twos, fives, and tens; forward by twenty-fives; by threes from 3 to 36; tally marks; roman numerals 1–10; by even and odd numbers; ordinal numbers: 11–20; writing numbers to 1,000; writing words thirteen-twenty; using symbols > and < to show greater than and less than; before and after: by twos, fives, tens; illustrating numbers and place value with objects; understanding hundreds, tens, and ones; ordering four numbers; addition with carrying
• NEW ADDITION CONCEPTS INTRODUCED INCLUDE: writing addition number sentences; column addition with up to five single-digit addends; two- and three-digit problems without carrying; carrying two- and three-digit numbers with carrying to the tens and hundreds places; mental arithmetic problems with up to 5 single-digit numbers; mental arithmetic problems combining single-digit addition and subtraction up to 3 numbers
• NEW SUBTRACTION CONCEPTS INTRODUCED INCLUDE: subtraction families 1–18 (vertical and horizontal form); subtracting coins; timed mastery; missing terms; mental arithmetic problems combining single-digit addition and subtraction up to 3 numbers; writing subtraction number sentences; subtracting one-digit problems; subtracting two- and three-digit problems without borrowing; word problems (oral and written)
• NEW MULTIPLICATION CONCEPTS INTRODUCED INCLUDE: repeated addition; objects to multiply; counting by threes; concept of multiplication; writing a multiplication fact. NEW FRACTION CONCEPTS INTRODUCED INCLUDE: the concept of fractions; parts of a group (one half, one fourth, one third); comparing one half, one fourth, one third; least to greatest
• NEW PROBLEM-SOLVING CONCEPTS INTRODUCED INCLUDE: written word problems; solving word problems (addition, subtraction, money); creating and illustrating story problems; identifying extra and missing facts; choosing the operation
• NEW MONEY CONCEPTS INTRODUCED INCLUDE: recognize coin and value (half dollar, dollar); count quarters, half dollars, dollars; adding quarters and pennies, dimes and nickels; counting combinations of coins, coins in mixed order; adding and subtracting money
• NEW MEASURING CONCEPTS INTRODUCED INCLUDE: length (inch, foot, yard, centimeter), weight (ounce, pound), comparing weights, capacity (cup, pint, quart, gallon)
• NEW GRAPHING, STATISTICS, AND PROBABILITY CONCEPTS INTRODUCED INCLUDE: horizontal bar graphs (scales by 1s, 2s, 10s, 5s, and 3s); pictographs; graphing tally marks
• NEW GEOMETRY CONCEPTS INTRODUCED INCLUDE: recognize shapes (hexagon, trapezoid); symmetry; shapes in a grid; perimeter of a rectangular object