DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. CFU Teacher completes A; students complete B. Students, you already know how to solve number sentences. Sometimes we have to read word problems to find the addition number sentences that we need to solve. Today, we will write addition number sentences. Name_____________________ CFU What are we going to do today? Activate (or provide) Prior Knowledge Today, we will write addition number sentences. Circle the plus sign. Circle the equal sign. Solve the addition number sentences. A = B = Learning Objective

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. CFU On your whiteboard, write a plus sign. On your whiteboard, write an equal sign. Which of the number sentences can be written from the following word problem? How do you know? A B Addition means to put together. Jose has five green balls and four orange balls. Jose has nine balls altogether. James had five pieces of candy. Then he got one more. James now has six pieces of candy altogether = 6 Addition Number Sentence: = 9 To write an addition number sentence, look for addition key words. 5 − 4 = 1 number plus signequal sign Addition Key Words altogether total In your own words, what does addition mean? Addition means _______________. Concept Development

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. Skill Development/Guided Practice Step #1: Read the word problem carefully. a. Identify 1 addition key words. (underline) b. Identify number words. (circle) Step #2: Write an addition number sentence. Step #3: Read the addition number sentence aloud. Write addition number sentences. CFU (#1a) How did I/you identify addition key words? (#1b) How did I/you identify number words? (#2) How did I/you write an addition number sentence? 1. Juan has two blue marbles and three red marbles. Juan has five marbles altogether. 2. Allison has three green blocks and one red block. Allison has four blocks altogether. To write an addition number sentence, look for addition key words. Addition means to put together. 1 find Addition Key Words altogether total

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. Skill Development/Guided Practice (Continued) 3. Juanita has two pieces of candy. If she gets five more, Juanita will have seven pieces of candy in total. 4. Alex has five pencils. If he gets two more, Alex will have seven pencils in total. Step #1: Read the word problem carefully. a. Identify addition key words. (underline) b. Identify number words. (circle) Step #2: Write an addition number sentence. Step #3: Read the addition number sentence aloud. Write addition number sentences. CFU (#1a) How did I/you identify addition key words? (#1b) How did I/you identify number words? (#2) How did I/you write an addition number sentence? Addition Key Words altogether total To write an addition number sentence, look for addition key words. Addition means to put together.

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. Importance CFU Does anyone else have another reason why it is important to write an addition number sentence? (pair-share) Why is it important to write an addition number sentence? You may give me one of my reasons or one of your own. Which reason is more important to you? Why? 1.Writing addition number sentences will help you solve real world problems. James has seven pieces of candy. He gets three more from his father. James has ten pieces of candy altogether = 10 To write an addition number sentence, look for addition key words. Addition means to put together.

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. Concept Closure = 6 What do the symbols mean? + __________________________ = __________________________ 1. Jamie has two blue shirts and six green shirts. Jamie has eight shirts altogether. Step #1: Read the word problem carefully. a. Identify addition key words. (underline) b. Identify number words. (circle) Step #2: Write an addition number sentence. Step #3: Read the addition number sentence aloud. Addition Key Words altogether total Skill Closure Write addition number sentences below. To write an addition number sentence, look for addition key words. Addition means to put together. Summary Closure What did you learn today about writing addition number sentences? (pair-share)

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. Independent Practice Name _____________________ 1. Albert has seven blue pens and two red pens. Albert has nine pens altogether. 2. Rashid has four orange pencils and three blue pencils. Rashid has seven pencils altogether. Step #1: Read the word problem carefully. a. Identify addition key words. (underline) b. Identify number words. (circle) Step #2: Write an addition number sentence. Step #3: Read the addition number sentence aloud. Write addition number sentences. Addition Key Words altogether total To write an addition number sentence, look for addition key words. Addition means to put together.

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. Independent practice (continued) 3. Rachel has seven coins. If she finds one more, Rachel will have eight in total. 4. Erick has five stones. If he finds three more stones, Erick will have eight in total. Step #1: Read the word problem carefully. a. Identify addition key words. (underline) b. Identify number words. (circle) Step #2: Write an addition number sentence. Step #3: Read the addition number sentence aloud. Write addition number sentences. Addition Key Words altogether total To write an addition number sentence, look for addition key words. Addition means to put together.

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. Periodic Review 1 Name _______________________ 1. George has six toy cars. If he gets four more, George will have ten toy cars in total. 2. Alberto found one block. He found six more. Alberto has seven blocks altogether. Step #1: Read the word problem carefully. a. Identify addition key words. (underline) b. Identify number words. (circle) Step #2: Write an addition number sentence. Step #3: Read the addition number sentence aloud. Write addition number sentences. Addition Key Words altogether total To write an addition number sentence, look for addition key words. Addition means to put together.

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. Periodic Review 2 Name ________________________ 1. Jeffery has eight marbles. Jane has one marble. Jeffery and Jane have nine marbles altogether. 2. Maria has five butterfly stickers and nine ladybug stickers. Maria has fourteen stickers altogether. Step #1: Read the word problem carefully. a. Identify addition key words. (underline) b. Identify number words. (circle) Step #2: Write an addition number sentence. Step #3: Read the addition number sentence aloud. Write addition number sentences. Addition Key Words altogether total To write an addition number sentence, look for addition key words. Addition means to put together.

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. Periodic Review 3 Name ________________________ 1. Hannah has four dolls. Alicia has seven dolls. Hannah and Alicia have eleven dolls altogether. 2. Hector has seven toy cars and eight toy trucks. Hector has fifteen toys in total. Step #1: Read the word problem carefully. a. Identify addition key words. (underline) b. Identify number words. (circle) Step #2: Write an addition number sentence. Step #3: Read the addition number sentence aloud. Write addition number sentences. Addition Key Words altogether total To write an addition number sentence, look for addition key words. Addition means to put together.

DataWORKS Educational Research (800) ©2012 All rights reserved. Comments? 1 st Grade Algebra & Functions 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Lesson to be used by EDI-trained teachers only. Blank Page