Hitting the Trifecta! Fractions, Decimals, Percents Session # 439

Who are we? Sabrina Blake - 5th grade at Monte Vista Natalie Colombo - 3rd/4th grade at Mt Baldy Erik Huizar - 6th grade at Monte Vista Dorothy Johnston - 6th grade at Monte Vista

Who are You? How many of you in the room are… Teachers? (What grade level(s)?) Coaches? Administrators? Other?

Agenda ● Acknowledgements ● Fractions ● Decimals ● Percents ● Questions

Acknowledgements ●The work we are sharing with you today was supported by the ACES- Algebraic Concepts for Elementary Students- project, sponsored by the National Science Foundation, the Ontario-Montclair School District, and the Center for Enhancement of Mathematics Education at CSU San Bernardino. ●We would specifically like to thank: ■ Dr. Davida Fischman ■ Carol Cronk and Jennifer Hagman ■ Sultana Dixon and Dr. Kevin Vaughn

Does this look familiar?

Fractions ●Create Fractions at Your Table: ■ Playdough, yarn, rectangular construction paper, strip of construction paper - making various fractions at different tables. ●Number line connection ●Hundreds chart connection

Fractions

Fractions = 8 10

Decimals

tenths and hundredths- hundreds chart.1.01

Decimals Operations using the Base-10 models Addition:

Decimals Operations using the Base-10 models Subtraction:

Decimals Operations using the Base-10 models Your Turn! Add 0.74 and

Decimals Operations using the Base-10 models Multiplication: 0.24 x 5

Decimals Operations using the Base-10 models Multiplication: 0.24 x

Decimals Operations using the Base-10 models Division: 4.35 ÷ 3

Decimals Operations using the Base-10 models Division: 4.35 ÷ 3 =1.45

Decimals Operations using the Base-10 models Your Turn! Choose either... Multiplication: 1.2 x 3 Division: 3.28 ÷ 4

Decimals Operations using the Base-10 models Your Turn! Choose either... Multiplication: 1.2 x 3 = 3.6 Division: 3.28 ÷ 4

Decimals Operations using the Base-10 models Your Turn! Choose either... Multiplication: 1.2 x 3 Division: 3.28 ÷ 4 = 0.82

Decimals Operations using the Base-10 models Multiplying two decimals: 0.3 x 1.2 (3/10 of 1 and 2/10) = 0.36

Decimals Operations using the Base-10 models Dividing two decimals: 1.8 ÷ 0.6 (1 and 8/10 split into groups that are 6/10 in size) = 3 0.6

Decimals Operations using the Base-10 models Your Turn! Choose either... Multiplication: 2.5 x 0.8 Division: 3.6 ÷ 0.4

Decimals Operations using the Base-10 models Your Turn! Choose either... Multiplication: 2.5 x 0.8 = 2.0 Division: 3.6 ÷ 0.4

Decimals Operations using the Base-10 models Your Turn! Choose either... Multiplication: 2.5 x 0.8 = 2.0 Division: 3.6 ÷ 0.4 = 9

Percents Our goal is to help students understand find percent of a number..01

Percents 1% = 10%

Percents.01 Percents 1% = 14% = 57% = 38%

Percents A school in Los Angeles has a student population of 450 students. 14% of the students are receiving free or reduced lunch. How many students are going to receive free or reduced lunch? = 45 students = 18 students = 63 students 450 ÷ 100=4.5

Percent Example

Addresses (Fractions) (Decimals) (Percents) (Percents)

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Resources ● Engage New York Modules ● National Library of Virtual Manipulatives ● Learn Zillion Videos ● Teaching Elementary Mathematics, John Van De Walle