Grade 5 - Adding and Subtracting Fractions Unit
Standards covered:
- 5.3 Number and operations
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5.3H
Represent and solve addition and subtraction of fractions with unequal denominators referring to the same whole using objects and pictorial models and properties of operations.
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5.3K
Add and subtract positive rational numbers fluently.
The Adding and Subtracting Fractions Unit involves using a variety of methods to join or separate parts referring to the same whole. Methods may include replacing mixed numbers with equivalent fractions; using properties of operations and the relationship between addition and subtraction; and using visual models of fractions. Questions to answer may include:
- Why must we use the same “whole” when adding or subtracting fractional parts?
- How can a number line be used to represent adding or subtracting fractions?
- How can benchmark fractions help to determine whether a sum or difference is reasonable?
Summative Assessment Task
Students determine if two boys ate the same amount of pizza, or if one boy ate more than the other.
Instructional Tasks/Formative Assessments
Students determine how long it takes the itsy bitsy spider to climb out of the water spout.
Students survey the class and represent their data to show what the favorite pizza topping is in the class.
Students determine who ate the most cake, how much more cake they ate, and how much cake is left.
Students determine how many whole pizzas five boys need to order, and how much each boy will pay for the pizza slices they eat.
Students use pattern blocks to design a necklace and determine the cost of the necklace with given fractional values for each pattern block shape.
Student determine how many hours Alice needs to work at her job to have enough money to buy a game player.
The N/A classification refers to TEKS Standards that cannot be assessed through problem solving.
For this reason, tasks have not been included for these particular standards.
K.7A K.7B K.9B K.9C K.9D