4 The student does not The student The student The student identifies demonstrate demonstrates demonstrates any correct understanding of tens inconsistent understanding of most interpretation of each 1.NBT.2 and ones within a given understanding of tens aspects of tens and quantity. For example, number and is unable and ones within a given ones within a given Part (a) is accurate with to complete any number, answering number, answering at answers such as 0 tens section correctly. one section correctly. least two sections 39 ones, 2 tens 19 correctly. ones, etc. Typical answers may be as follows: 3 tens 9 ones 4 tens 0 ones 23 ones 5 The student does not The student The student The student matches demonstrate demonstrates limited demonstrates some all four equal amounts understanding of the understanding of the understanding of the as follows: 1.NBT.2 equivalent equivalent equivalent 21 = 2 tens representations of tens representations of tens representations of tens 1 one and ones and is unable and ones, matching and ones, matching 4 tens = 40 ones to match any equal one equal amount. two equal amounts. 36 ones = 3 tens 6 amounts. ones 12 ones = 1 ten 2 ones 6 The student The student The student The student correctly demonstrates limited demonstrates some demonstrates the identifies the following: ability to compare ability to compare ability to compare The greater 1.NBT.3 numbers, correctly numbers, (e.g., most numbers, numbers as comparing one or none identifying greater but correctly comparing 40 33 of the four sets of not less), correctly three of the four The lesser numbers numbers. comparing two of the comparisons. as four sets of numbers. 20 12 7 The student is unable The student has limited The student has some The student correctly to use symbols to ability to use symbols ability to use symbols answers: compare numbers and to compare numbers, to compare numbers, > 1.NBT.2 is unable to correctly correctly answering correctly answering > answer any of the four one of the four two or three of the 1.NBT.3 < comparisons. comparisons. four comparisons. <
4 1.NBT.2 The student does not demonstrate understanding of tens and ones within a given number and is unable to complete any section correctly. The student demonstrates inconsistent understanding of tens and ones within a given number, answering one section correctly. The student demonstrates understanding of most aspects of tens and ones within a given number, answering at least two sections correctly. The student identifies any correct interpretation of each quantity. For example, Part (a) is accurate with answers such as 0 tens 39 ones, 2 tens 19 ones, etc. Typical answers may be as follows: 3 tens 9 ones 4 tens 0 ones 23 ones 5 1.NBT.2 The student does not demonstrate understanding of the equivalent representations of tens and ones and is unable to match any equal amounts. The student demonstrates limited understanding of the equivalent representations of tens and ones, matching one equal amount. The student demonstrates some understanding of the equivalent representations of tens and ones, matching two equal amounts. The student matches all four equal amounts as follows: 21 = 2 tens 1 one 4 tens = 40 ones 36 ones = 3 tens 6 ones 12 ones = 1 ten 2 ones 6 1.NBT.3 The student demonstrates limited ability to compare numbers, correctly comparing one or none of the four sets of numbers. The student demonstrates some ability to compare numbers, (e.g., identifying greater but not less), correctly comparing two of the four sets of numbers. The student demonstrates the ability to compare most numbers, correctly comparing three of the four comparisons. The student correctly identifies the following: The greater numbers as 40 33 The lesser numbers as 20 12 7 1.NBT.2 1.NBT.3 The student is unable to use symbols to compare numbers and is unable to correctly answer any of the four comparisons. The student has limited ability to use symbols to compare numbers, correctly answering one of the four comparisons. The student has some ability to use symbols to compare numbers, correctly answering two or three of the four comparisons. The student correctly answers: > > < <