Project 1

Today’s lesson is on:

Fourth Grade Mathematics

Standard 1

Students will acquire number sense and perform operations with whole numbers, simple fractions, and decimals.

Objective 4

Solve problems involving multiplication and division of whole numbers and addition and subtraction of simple fractions and decimals.

Today’s Objectives:

By the end of this lesson you should be able to:

• Know what a fraction is
• How to add, and subtract simple fractions and decimals
• Solve problems involving simple fractions and interpret the meaning of the solution.

Lesson

The lesson is broken up into four parts. You will need to complete each part to get full credit. Follow the directions carefully.

What is a fraction?

We use fractions every day. Have you every asked your friend for half a cookies before? A fraction is a part of a whole piece. So if you cut a pizza into four pieces and you eat one piece, you would have eaten one fourth of the pizza.

Why do we need Fraction?

• Watch the news video from the NASA’s Kids Science News Network™ about why we need fractions.
• What would happen if we did not have Fractions? Answers this question on the blog page (link below). Any answer is acceptable so be creative and really think about it. Two to three complete sentences. Class Blog. Click on leave a comment.
• Last respond to one other students post on the blog page. Be respectful to one another and think about what they wrote.

Adding and subtracting Fractions

A fraction can be written as N/D. N stands for numerator (it is always the number on top of the line). D is the denominator (it is always on bottom of the line).  An important point to remember is that the denominator can never be zero.

Adding fractions can be simple if you have the denominators the same. If the denominators are the same then you just add the numerator.

• Example: 1/6 + 4/6 = 1+4/6 = 5/6

Subtracting fractions can be is the same as adding fractions. You want the denominator to be the same and then you just subtract the numerator.

• Example: 6/8 – 1/8 = 6 – 1/8 = 5/8

Now you can practice adding fractions in the Faction game. Click on the + button of the instructions to learn how to play. Your goal is to get all of the markers to the right side of the game board, using as few cards as possible.

In your Math Journal

• Write how many cards that it took you to complete the Fraction game and tell me if you liked the game or not.
• Write a story problem using addition or subtraction with simple factions.
• Write how you could use fractions in your own life and what you learn today from the online activity.
• I will be looking over your journals to assess your understanding of the lesson.

Rubric

	Beginning   1	Developing   2	Very good   3	Exemplary   4	Score and teacher feedback
Blog post Question	Tried but did not answer the question.	Answered the question in one sentence.	Answered the question in two to three sentences.	Answered the question in two to three sentences with correct spelling.
Comment on other student’s blog post	Less then three word comment.	Made comment on other post but was not respectful to other student.	One to two sentences response with respect to other student.	One to two sentences response with respect to other student with correct spelling.
Math Journal   Score from online game	Tried the online game but did not complete to get a score.	Completed game with score but no comment.	Completed game with score and comment on the game.	Completed game with score and comment on the game with correct spelling.
Math Journal   Story problem	Wrote a story problem but did not show adding or subtracting fractions.	Story problem showed adding or subtracting fractions.	Story problem showed adding or subtracting fractions with an answer to the problem.	Story problem showed adding or subtracting fractions with an answer to the problem with correct spelling.
Math Journal   Reflection	One to two words reflection.	One complete sentence.	Two to three complete sentences.	Two to three complete sentences with correct spelling.