A piece of Yarn nf. 2 and nf. 3 -task 2



Download 343 Kb.
Sana25.06.2017
Hajmi343 Kb.


Formative Instructional and Assessment Tasks




A Piece of Yarn

3.NF.2 and 3.NF.3 -Task 2

Domain

Number and Operations – Fractions

Cluster

Develop understanding of fractions as numbers.

Standard(s)

3.NF.2 Understand a fraction as a number on the number line; represent fractions on a number line diagram.

3.NF.3 Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.

Materials

Student activity sheet, paper, pencils, white boards and dry-erase markers (optional)

Task

Part 1: Suni was using the following yard stick to measure pieces of yarn for her art project. This ruler shows how much yarn she cuts for each color. What fraction of a unit does she need of each color?

Part 2: If the unit was divided into fourths, which colors of string could be measured in fourths? How many fourths is each of those colors? Explain your answer using pictures or words.

Part 3: Are any of the colors equal to ½ of the unit? Write a sentence explaining your reasoning.




Rubric

Level I

  1. Level II

Level III

Limited Performance

  1. Not Yet Proficient

Proficient in Performance

  • Accurately solves Part 1: Blue: 1/8, Green: 4/8, Red 6/8.

  • Accurately solves Part 2: Green and Red can be measured in fourths. Green: 2/4. Red: 3/4.

  • Accurately solves Part 3: Green.

  • Writes clear and appropriate explanations.

*Level IV would be to include other equivalent fractions.


Standards for Mathematical Practice

1. Makes sense and perseveres in solving problems.

2. Reasons abstractly and quantitatively.

3. Constructs viable arguments and critiques the reasoning of others.

4. Models with mathematics.

5. Uses appropriate tools strategically.

6. Attends to precision.

7. Looks for and makes use of structure.

8. Looks for and expresses regularity in repeated reasoning.


A Piece of Yarn
Suni was using the following yard stick to measure pieces of yarn for her art project. This ruler shows how much yarn she cuts for each color.

What fraction of a unit does she need of each color?

If the unit was divided into fourths, which colors of string could be measured in fourths?

How many fourths is each of those colors? Explain your answer using pictures or words.


Are any of the colors equal to ½ of the unit? Write a sentence explaining your reasoning.




Download 343 Kb.

Do'stlaringiz bilan baham:




Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©hozir.org 2020
ma'muriyatiga murojaat qiling

    Bosh sahifa
davlat universiteti
ta’lim vazirligi
O’zbekiston respublikasi
maxsus ta’lim
zbekiston respublikasi
o’rta maxsus
axborot texnologiyalari
davlat pedagogika
nomidagi toshkent
pedagogika instituti
guruh talabasi
texnologiyalari universiteti
navoiy nomidagi
samarqand davlat
toshkent axborot
nomidagi samarqand
haqida tushuncha
toshkent davlat
ta’limi vazirligi
xorazmiy nomidagi
Darsning maqsadi
vazirligi toshkent
tashkil etish
Toshkent davlat
rivojlantirish vazirligi
Alisher navoiy
matematika fakulteti
Ўзбекистон республикаси
pedagogika universiteti
sinflar uchun
bilan ishlash
maxsus ta'lim
Nizomiy nomidagi
таълим вазирлиги
tibbiyot akademiyasi
ta'lim vazirligi
o’rta ta’lim
fanlar fakulteti
kommunikatsiyalarini rivojlantirish
fanining predmeti
махсус таълим
umumiy o’rta
haqida umumiy
Referat mavzu
fizika matematika
Navoiy davlat
Buxoro davlat
universiteti fizika
ishlab chiqarish
Fuqarolik jamiyati
pedagogika fakulteti