Second Grade Content Preview
Unit 06
Energizers (5 min)
Below you will find a new spin on some energizers you may have already used in your classroom. Feel free to continue to use the other energizers listed in Unit 01 by clicking here: http://bit.ly/2evd1Dc.
Tell me a story . . . Show the students an addition or subtraction problem. Have the students turn and tell their partner a story problem that would math the problem shown, or partners can create the story problem together.
Don't forget to include problems that have a missing minuend, subtrahend, or addend to include all different types of thinking.
Opening (5-10 min)
Problem of the Day becomes Problem of the week!
A new spin on Problem of the Day could be Problem of the week. Use a problem solving strategy to break apart a problem until your students get down a routine. Use the option below as days to break apart a problem. Day .
- Understand - what are we trying to find
- Plan and Solve
- Check with another strategy
- Find the mistake - give students a strategy to the problem and see if they can find the error!
Use the link to access different types of word problems: https://drive.google.com/open?id=1z-E2RRqnc_IA0HgcQ7iP42rbaNgXQ0jVLUo0WXXf__U
Optional Unit 06 Activities
Minute to Win It
See this link for a detailed description of the activity:
https://docs.google.com/document/d/18md-mB9mVOITig7lSbA8bscrqELBH9tU6tek3jiQgIA/edit?usp=sharing
Scoot with the Standard Algorithm
Use this activity to mix together subtraction and addition with the algorithm.
Remember to keep problems where students may not have to regroup in the circulation
Put students in groups of 2
Around the room, put different types of addition and subtraction word problems or numerical equations. Students work with their partner to circulate the room and solve the word problem. If they see only the numerical equation is represented, students must write a story problem that would match the numerical expression given.
Click this link for the directions above and samples of problems that you can use:
https://docs.google.com/document/d/1zYhi5d5niidrrCC9ukrEBAvSJileUeKUciHIZTuVcK4/edit?usp=sharing
Math Strategies Puzzles
Use this puzzle template.
https://docs.google.com/document/d/15Gp59D7gxDTUDBTG8b2tD_GTr-lYVT1t-gc-wBWMmSk/edit?usp=sharing
- Give students an addition or subtraction word problem.
- Students then create demonstrate finding the answer three different ways:
Addition: an open number line, Addends decomposed and grouped, partial sums expanded form, partial sums vertically, or standard algorithm.
Subtraction: an open number line, properties of operations (minuend and/or subtrahend may be decomposed to produce friendly numbers), subtraction of numbers in expanded form, or standard algorithm. - The fourth part of the puzzle piece will be used to show the answer in standard form (or you can glue the word problem here. Remember, you can easily cut out word problems from the Go Math book that will fit the piece)
- Students cut out the puzzle pieces.
- Place four different student puzzles in one gallon Ziploc bag and you have an activity/station for others to try to put together
Beaded Number Lines to show Regrouping in subtraction
Try using the Beaded number line to show students how to use the properties of operations and decompose the subtrahend. For example, when subtracting 27 from 43: Students can slide over the 43 beads. Then students can subtract 3 red beads and they still need to subtract 4 (decomposing 7 into 3 and 4), but they have to dip into the next group of beads (showing the need to regroup) in order to continue subtracting beads.
1. Guided Math
https://drive.google.com/open?id=1RajUpuflP_Osu6YJdJM294yQyEldSxtnb6gLGmKTAVw
3. Review/Preview:
Sorting Boxes
- Have students listen to or read the book:
Grandma's Button Box
When she spills her grandmother's button box, Kelly and her cousins try to sort them by size, color, and shape and they earn Grandma's gratitude.
- Need: Buttons (ask students to bring from home) other items that can be sorted: rocks, seeds, cereal, pencils, books, backpacks, bear counters, plastic bugs, erasers, crayons, makers. These could be a "favorites things" box. For example, a student may bring a tub of matchbox cars or shopkins.
- Items are placed in containers. Students sort the items and justify the sorting, create a picture graph, and a bar-type graph of the items they sorted.
- Student writes sentences about the data: by the data (_____ had the most), between the data (____ had 3 more than _______.)
Fluency:
I love math: Students in a group of four each make a two digit number. The students then add the four numbers together using various strategies for addition.
Adding/subtracting with regrouping with the algorithm practice:
Counting coins practice
Closing (5 min): Relate back to learning and language objectives
- Class Journal
- Personal journal
- Partner talks
- Self assessment