# Q3W3 (1/18 – 1/21)

Teacher Kathleen Manning Math and Science 4 3 Add/Subtract Fractions; Sound Energy
Standard(s) Taught

MATH: MAFS.4.NF.2.3

– Understand Addition and Subtraction of Fractions

SCIENCE: SC.4.P.10.3

– Investigate and explain that sound is produced by vibrating objects, and that pitch depends on how fast or
slow the object vibrates.

Learning Targets and Learning Criteria

THE STUDENT WILL:

– Demonstrate with concrete and visual models that adding fractions referring to the same size whole is joining parts of the wholes.

– Demonstrate with concrete and visual models that subtracting fractions referring to the same size whole is separating parts of the wholes.

– Decompose a fraction (less than or greater than 1) into a sum of fractions with the same denominator in more than one way using visual models.

– Record the decomposition of a fraction by an equation and justify the decomposition.

– Decompose a mixed number into a sum of fractions equal to 1 and a fraction less than 1 to find an equivalent fraction to replace the mixed number in an addition or subtraction situation.

– Find equivalent sums or differences by converting fractions greater than 1 to mixed numbers by decomposing the fraction into a sum of fractions equal to 1 and fractions less than 1.

– Add and subtract mixed numbers with like denominators using equivalent fractions, and/or by using properties of operations and the relationship between addition and subtraction.

– Solve word problems involving addition and subtraction of fractions and mixed numbers with like denominators using visual fraction models and/or equations.

– Describe the requirements/components necessary for sound to be produced.

– Investigate the production of sound (e.g., tuning forks, hollow tubes, vocal cords, or water bottles filled with different amounts of water).

– Explain that sound is produced by vibrating objects.

– Investigate variations in pitch (e.g., water bottle liquids, rulers, straws, stretched rubber bands).

– Explain that pitch depends on the speed (fast and slow) an object vibrates and the measurements (size and length) of the object.

Classroom Activities

Weekly I-Ready Math Lessons (45 minutes)
Math Book #2:
Check My Progress, pp. 529-530
Lesson 8, “Problem Solving Investigation- Use Logical Reasoning” pp. 531-536
Lesson 9, “Mixed Numbers” pp. 537-542
Lesson 10, “Mixed Numbers and Improper Fractions” pp. 543-548
Worksheet: 1. “Making Sound”
2. “Human Voices Data Sheet”
Video: “Sound Waves- High and Low Pitch”
Sound Lab Stations

Assignments Due