Description
What our Fractions with Denominators of 10 and 100 lesson plan includes
Lesson Objectives and Overview: Fractions with Denominators of 10 and 100 teaches students how to draw a number line and identify where a mixed number or improper fraction is located. At the end of the lesson, students will be able to add fractions with denominators of 10 and 100 by creating equivalent fractions. This lesson is for students in 4th grade and 5th grade.
Classroom Procedure
Every lesson plan provides you with a classroom procedure page that outlines a step-by-step guide to follow. You do not have to follow the guide exactly. The guide helps you organize the lesson and details when to hand out worksheets. It also lists information in the blue box that you might find useful. You will find the lesson objectives, state standards, and number of class sessions the lesson should take to complete in this area. In addition, it describes the supplies you will need as well as what and how you need to prepare beforehand.
Options for Lesson
Included with this lesson is an “Options for Lesson” section that lists a number of suggestions for activities to add to the lesson or substitutions for the ones already in the lesson. If you have more advanced students, you can have them use three fractions to add or practice creating equivalent fractions and then subtract. For an additional activity, you can have your students each hold a fraction and then find a partner to add to and then switch and find another partner. Finally, try using money to show equivalence where each dime has to be traded in for the same number of pennies.
Teacher Notes
The teacher notes page includes lines that you can use to add your own notes as you’re preparing for this lesson.
FRACTIONS WITH DENOMINATORS OF 10 AND 100 LESSON PLAN CONTENT PAGES
Fractions with Denominators of 10 and 100
The Fractions with Denominators of 10 and 100 lesson plan includes two pages of content. We can write fractions in many different ways: algebraically, by area, as a set, or on a number line. Fractions have two parts. They have a numerator, the number on top, which shows how many parts of the whole you have. They also have a denominator, the number on the bottom, which shows how many equal parts make up the whole.
In math, when we say equivalent, we mean that the values are equal. We can only add or subtract fractions when they have the same number in the denominator. But what if you want to add or subtract fractions that don’t? When that happens, you need to create equivalent fractions. These are fractions that have the same value even though they look different.
For example, 1/2 and 2/4 are equivalent fractions. These fractions have different numerators and denominators, but they have the same value. The lesson shows two circles. The one marked 1/2 is split into two parts, with one part shaded. The one marked 2/4 is split into four parts, with two parts shaded. We can see from these pictures that one piece shaded out of two and two parts shaded out of four are the same, or equivalent.
When fractions have the same denominator, we say that they have a common denominator. We can easily add and subtract fractions with a common denominator because they represent parts of the same whole. For example, 2/14 + 5/14 = 7/14. When we have a common denominator, we simply add the numerators together to find the sum.
However, look at the equation 3/10 + 4/100. These fractions do not have the same denominator. One has a denominator of 10 while the other has a denominator of 100. Therefore, we must create an equivalent fraction. To do this, we can turn 3/10 into hundredths. The lesson shows a visual representation of this, but notes that you can’t draw a picture every time you want to create an equivalent fraction.
To create an equivalent fraction mathematically, we need to figure out what number we need to multiply 10 by to get 100. We know that 10 x 10 = 100, so we need to multiply both the numerator and denominator by 10 to find our equivalent fraction: 3/10 x 10/10 = 30/100. Finally, we add! 30/100 + 4/100 = 34/100, so 34/100 is our final answer.
FRACTIONS WITH DENOMINATORS OF 10 AND 100 LESSON PLAN WORKSHEETS
The Fractions with Denominators of 10 and 100 lesson plan includes four worksheets: an activity worksheet, a practice worksheet, a homework assignment, and a quiz. You can refer to the guide on the classroom procedure page to determine when to hand out each worksheet.
BOTTLE CAPS ACTIVITY WORKSHEET
Students will work in groups to complete the lesson activity. Each group will draw bottle caps with fractions with denominators of 10 and 100 on them out of a bag. They will then flip two of the bottle caps over and add the fractions together, recording their work on the worksheet.
FIND THE SUM PRACTICE WORKSHEET
The practice worksheet asks students to use the grids on the worksheet to find the sum.
FRACTIONS WITH DENOMINATORS OF 10 AND 100 HOMEWORK ASSIGNMENT
Like the practice worksheet, the homework assignment asks students to use the grids on the worksheet to find the sum.
QUIZ
This lesson also includes a quiz that you can use to test students’ understanding of the lesson material. For the quiz, students will shade the picture and find the sum. They will also find the sum using equivalent fractions, showing their work.
