Common Core Math Standards Grade 3 Can you

Common Core Math Standards: Grade 3

Can you find the value of the missing letters?

Approaches to finding the values?

Quick Images • Write a verbal description and an equation for what you see.

Quick Images

Quick Images

Quick Images

Math Games • Close to 1, 000 - 2 3 -digit numbers whose difference is close to 1, 000 • Close to 88 - 2 3 -digit numbers whose difference is close to 88

Fractions

Partitioning… • Your friends come to a party with different lengths of long strips of gum. There is an argument over who has more. • • Sara has 3/4 of a foot, 2/8 Tomas has 10/12 of a foot, 2/12 Jillian has 5/7 of a foot, 2/7 Miguel has 7/9 of a foot, 2/9 • Draw a picture of each strip of gum and determine who has more.

Partitioning • Approaches… • What was challenging?

Partitioning… 3 rd grade version • Your friends come to a party with different lengths of long strips of gum. There is an argument over who has more. • Sara has 1/6 of a foot • Tomas has 1/4 of a foot • Jillian has 1/3 of a foot • Draw a picture of each strip of gum and determine who has more.

Partitioning… • What reasoning do we expect students to use when they compare fractions with the same numerator and different denominators?

Cutting the Cake • Draw a rectangular cake. Now, cut the cake so that you and three friends get an equal section. • Can you cut the cake so all four pieces are equal but have different shaped-pieces? • Possibilities… 2 triangles and 2 rectangles – 2 squares and 2 rectangles – 2 triangles and 2 squares

Cutting the Cake • What math concepts are you using and working with? • What is the big idea here that students are working with?

• K-3…. What mathematical processes and concepts are involved with each of these? 2 G 2. Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

Remember… • All fraction work in Grades 1 and 2… – Area model, no number line (tape diagram) models – Students in Grade 2 are not expected to write fractions as numerator/denominator. Instead, they use informal language.

Task Sort • Solve each of the tasks. • For each task complete a row of the table.

Task Design • Pick a Standard from the CCSSM • Write a few tasks that you can use with your students. • Characteristics of good tasks?

Sharing Tasks

Resources…. • DPI Math wiki – Unpacking document • Standards for Math Practice explanation – Formative assessment tasks – 1 unit on number sense per grade level – Lessons for Learning (being revised this summer) • Illustrative Mathematics tasks • Mathematics Reasoning Inventory

Unpacking- MPs Unpacked

Show Me Demo • http: //www. showme. com/sh/? h=0 hl 4 iem

• Drew Polly- Drew. polly@uncc. edu • Alexis Piciano- alexis. piciano@cms. k 12. nc. us • http: //elemath. pbworks. com