|Subject Area||Math and Science|
|Unit of Instruction||Add/Subtract Fractions; Sound Energy|
– Understand Addition and Subtraction of Fractions
– Investigate and explain that sound is produced by vibrating objects, and that pitch depends on how fast or
|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.
Weekly I-Ready Math Lessons (45 minutes)