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This lesson provided by:
Author: Susan Jordan
System: Mobile County
School: Mobile County Board Of Education
General Lesson Information
Lesson Plan ID:
33010
Title:
Roll 'N Round to Win
Overview/Annotation:
This lesson is a handson, gamebased lesson. It should be part of a larger unit of study on number sense, estimation, and/or place value. The lesson involves students in a gamebased activity which gives them a concrete understanding of the relationship between number values, place value, and the accepted mathematical rule for rounding numbers.
This is a College and CareerReady Standards showcase lesson plan.
Associated Standards and Objectives
Content Standard(s):
MA2015 (3) 8. Solve twostep word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding. (This standard is limited to problems posed with whole numbers and having wholenumber answers; students should know how to perform operations in the conventional order when there are no parentheses to specify a particular order (Order of Operations).) [3OA8]
MA2015 (3) 10. Use place value understanding to round whole numbers to the nearest 10 or 100. [3NBT1]
MA2015 (3) 11. Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction. [3NBT2]
Local/National Standards:
Primary Learning Objective(s):
Students will be able to:
Round 2 and 3–digit numbers to the nearest power of 10.
Add ten 2 and 3digit numbers to determine the greatest sum.
Understand the value and the place values of a number determines to which power of 10 it should be rounded.
Identify situations in which rounding estimation can be used.
Determine when rounding estimation is acceptable or when an exact amount is needed.
Understand what a nice number is. (A nice number is a number that is a multiple of 10.)
Student Essential Question: How do I decide what ‘ten’ or ‘hundred’ number is the closest for rounding and estimation?
Additional Learning Objective(s):
Determine which two whole number powers of 10 a number falls between.
Determine the lowest and greatest possible number that a nice number has been rounded from. (A number was rounded to 60. What is the least possible number it could have been?)
Fluently add and subtract within 1,000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
Preparation Information
Total Duration:
31 to 60 Minutes
Materials and Resources:
Teacher:
Interactive whiteboard lesson (If interactive whiteboard is not available, use attached teacher pages for overhead, dryerase board, or chart paper.);
Virtual Dice webpage prepared;
Laptop connected to interactive whiteboard (If teacher does not have a laptop for presenting, content may be written on the dryerase board or chart paper.); and
Interactive white board (IWB) (If no IWB, teacher may use LCD with copies on transparency sheets, DE board or chart paper.).
Student:
Each student should have:
a hundreds chart;
Roll ‘N Round Record Sheet;
a sheet protector to place the hundreds chart in;
a dryerase marker;
something to erase with (if sheet protector and marker are not available, students may use hundreds chart without writing on it);
pencil; and
exit card.
Each pair of students should have:
One dodecahedra die 09 (number cards 09 that can be shuffled can be used if dice are not available).
Technology Resources Needed:
LCD Projector
Interactive Whiteboard
SMART Lesson (If teacher does not have SMART software, this lesson will not open. Please refer to directions for using overhead projector, dryerase board, or chart paper.)
Background/Preparation:
Teacher
Go to virtual dice webpage, choose a 10sided dice, then customize dice. Teachers need to enter the digits 09 on the 10 sides.
Set up laptop and interactive whiteboard for presentation of lesson.
Student
Should be familiar with a hundreds chart.
Procedures/Activities:
Using the interactive whiteboard lesson, introduce the name of today's lesson and essential question (or objective for schools' that don't use an essential question.) (Slide 1)
Use the next page and questions to discuss estimation. (Questions are, "When you do math like adding and subtracting in your everyday life, do you always have to have an exact amount? Can you think of a time when you don’t have to know the exact amount?") (Slide 2)
Along with students, discuss each scenario listed to decide whether an exact or estimate is needed. Make sure to ask students to justify their answer. (Slide 3)
Talk about nice numbers, what they are, and why nice numbers are easy to work with. (Slide 4.) This includes ideas like they are easy to compute both on paper and mentally.
Introduce Roll 'N Round Game. Go over list of materials and make sure they are distributed. (Slides 5)
Put students into pairs. It is ok if there is a group of 3.
Read directions one by one prior to playing game whole group. (See the teacher handout of the directions.) (Slide 6)
Model the game with the class using the interactive white board lesson. For the model, only 5 rounds will be done. Virtual Dice has 10sided die that can be customized to digits 09. This page will be seperate from the IWB lesson. It must be set up prior to modeling. (Slide 7 & 8 and use virtual dice)
When model is over, let pairs begin game.
Teacher should monitor game play and observe student actions. Look for correct use of rounding.
As students finish, let each pair come to the board and write their names and circle the name of the winner. (For early finishers, let students continue playing on the back of the record sheet even if they do not get to finish.)
Followup discussion should include questions: "Looking at your record sheet, how much of this game is chance? How much is choice? What do you notice about the numbers where you had to go to the nice number that was less? What do you notice about the number where you got to go to the nice number that was most? What did you decide to do with the numbers that had a 5 in the ones place?"
Provide exit slip for students to complete at the end of the discussion.
Attachments: **Some files will display in a new window. Others will prompt you to download.
Assessment
Assessment Strategies
Use included Exit Slip. Students should try to complete without hundreds chart, but may use if cannot complete without it. Questions 14 are twodigit numbers that are direct use of the activity. Number 5 is an extension item which will determine if students can transfer understanding of twodigit rounding in a threedigit number. Number 6 is a higherorder, critical thinking question. The last problem is to see if students can apply rounding in a contextual problem with addition.
Acceleration:
If students can already round with twodigit numbers or without a hundreds chart, they can still play the game. Either they can complete the record sheet without using the hundreds chart or have them roll three times to make a threedigit number and round to nearest ten. In both situations, they should continue to write the two nice numbers the rolled numbers fall between.
Intervention:
Explore the hundreds chart.
Practice rolling die to make numbers.
Use a record sheet that does not require 10 rounds.