Adding and Subtracting Fractions

This video tutorial for fourth-grade students covers Module 5, Lesson 16, focusing on using visual models to add and subtract fractions with the same unit. It introduces the area model, number line, and units concept, emphasizing the importance of labels in fraction operations. The lesson explains converting improper fractions to mixed numbers and provides practice problems. It also highlights the use of number lines to model fractions, preparing students for more complex operations in future grades.

What visual models are introduced in this lesson for adding and subtracting fractions?

• Venn diagram, flowchart, and tree diagram

• Histogram, scatter plot, and pie chart

• Pie chart, bar graph, and line graph

• Area model, number line, and units model

What is the purpose of using visual models in this lesson?

• To help students understand adding and subtracting fractions

• To teach multiplication of fractions

• To introduce division of fractions

• To explain the concept of decimals

In the units model, how is 3/4s minus 2/4s represented?

• 2/4

• 5/4

• 1/4

• 3/4

When using the units model, what should students focus on instead of fractions?

• Labels

• Percentages

• Decimals

• Whole numbers

What is the result of 3/4s minus 2/4s in word form?

• Zero

• Two fourths

• One fourth

• Three fourths

What is the key concept when subtracting fractions with the same denominator?

• Multiply numerators and denominators

• Add numerators and denominators

• Subtract denominators, keep the numerator

• Subtract numerators, keep the denominator

What is an improper fraction?

• A fraction with a denominator of zero

• A fraction with a numerator of zero

• A fraction where the denominator is larger than the numerator

• A fraction where the numerator is larger than the denominator

How can 6/5 be expressed as a mixed number?

• 1 and 1/5

• 2 and 1/5

• 1 and 2/5

• 2 and 2/5

What should students do with improper fractions in this lesson?

• Convert them to mixed numbers

• Leave them as they are

• Convert them to decimals

• Multiply them by two

What is the result of 9/5 minus 3/5?

• 3/5

• 5/5

• 4/5

• 6/5