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 This blog is a place for fifth graders in Grand Forks, ND to share their thinking about math. The purpose of our blog is to communicate our learning through authentic interaction. We hope you will visit our page often and respond to our writing, thinking process, and problem solving.
 by Alice Smith
 • Problem Solving • Sandbags • Million \$ Mission • Which is Quicker? • Power Cards • Your Number Was... • Sequence Memory • Reaction Time 1 • Reaction Time 2 • Reaction Time 3 • Reaction Time 4 • Reaction Time 5 • Reaction Time 6 • Let's Play Math • Fraction Balloons • Math Splat • Mixed Numbers • Reducing Fractions • Survey Says?? • Goofy Smart Kids • Create A Graph
 Teacher Assignments Teacher Entries How are fractions used? 1/21 Watch the Pendulum Wave... 1/13 How do you use estimation? 1/12 No Easy Answer... 12/20 Brain Warm UP 12/16 Order in the Court 4/20 How do things pan out? 5/19 Mulitplying Fractions 5/6 Solving Equations 4/17 Order in the Court 4/17 Show All Positive and Negative Numbers 4/17 Positive and Negative Exponents 4/8 Fraction Problems 3/27 Musical Fractions 2/18 Valentine's Day 2/16 Measurement 2/16 2014 Olympic Numbers 2/9 Who uses fractions? 2/6 History of Fractions 1/18 Division Stories 1/8 Angle Mania 11/21 More Fraction Fun...if you dare! 10/30 Fractions, Decimals, Percents, Oh My!! 10/30 Multiplying Madness 10/12 Reaction Times 10/11 Jessi's Post... 10/2 Sam's Post... 10/2 Stella's Post... 10/2 Estimation Posts 10/2 Estimation and the Real World 10/2 The Eyeballing Game 9/24 First Math Post 9/11 Visitors...Please comment! 5/14 Student Entries Can you here the frations 5/6/14 What I Learned 4/20/14 PEMDAS 4/17/14 The Universe 4/13/14 Positive and Negative Exponents 4/11/14 Positive and Negative Exponents 4/10/14 What I think of the new game 4/9/14 Negative and Positive Exponents and Powers of 10 4/9/14 Positive And Negative Exponents 4/9/14 Powers of 10 Website 4/9/14 Show All

 Article posted January 21, 2016 at 05:04 PM GMT • comment • Reads 1000 Here are what some great 5th grade mathematicians have to say: MONEY!!!, cooking, doubling recipes, 1/2 tank of gas, a piece (or two...or three) of pie, movie ratings, fraction of crops harvested, dividing up pizza, shoe sizes, medicine doses, dividing paper when drawing, clothing sizes (in some countries --not in U.S.), car racing (he won by a fraction of a second), gymnastics scores, carpentry, drink half of your body weight in ounces of water, architecture (blue prints), dog grooming charts... Hey global friends...can you add more in our comment section? Article posted January 21, 2016 at 05:04 PM GMT • comment • Reads 1000
 Article posted January 13, 2016 at 06:29 AM GMT • comment • Reads 175 Caught this clip on the science channel the other night! You will enjoy exploring "The Kids Should See This" site. Please comment and let me know what you learn and discover. Enjoy! [LINK] Article posted January 13, 2016 at 06:29 AM GMT • comment • Reads 175
 Article posted January 13, 2016 at 01:43 AM GMT • comment • Reads 68 Student #1: Me: Mom, how do you use estimation? Mom: Well, here are some examples. I use it for knowing how long to put cheesy chips in the microwave, how much work I can get done in an hour, how much food our dogs need when we go on vacation, what size the load of laundry is, etc. Me: But why do you use estimation? Can't you just use a tool to measure things like your examples? Mom: I suppose, but estimating can save time, and can... Ummm... Give you a better result when you can't get an exact measurement (when that's not possible). Overall, estimation helps you be more efficient! Student #2 My dad uses estimation when he does the bills, estimating time, and estimating how long something is going to take. He uses it for estimating distance like how far will it take until he reaches his destination, and estimating how long something is going to last. Student #3: I asked my dad about how he uses estimation. I asked him questions like how do you use it? Why do you use it? When do you use it? What do you use it for? And what happens when you estimate wrong. It's very important to know how to estimate right because if he doesn't get around the price and estimates a little low and the customer accepts, you've got to do the job for that amount. If you estimate too high and they still accept you do the job and you keep the extra money. That's why you've got to be close to the price. Article posted January 13, 2016 at 01:43 AM GMT • comment • Reads 68
 Article posted December 21, 2015 at 02:18 AM GMT • comment (15) • Reads 2167 Check out this article about nuclear power and one person's opinion about it from the newspaper this weekend. There's an interesting and challenging math problem about how to cool a potential reactor for a nuclear plant. [LINK] Excerpt from The Grand Forks Herald, Article: Q&A with Duane Sand: Ten thousand jobs from nuclear power By Tom Dennis on Dec 19, 2015 "Now, here’s another water-related issue: The closest nuclear power plant to Chicago is the Dresden Generating Station. It’s on the confluence of two rivers; and every other year or so, the Army Corps of Engineers calls the officials at the plant to ask them to go “open cycle.” The reason is that they want Dresden to suck from the river, then put heated water back into the river to thaw ice to prevent the flooding of homes. Who’s to say we couldn’t do the same thing here? It doesn’t take a lot of warm water to melt a lot of cold ice. It would be a good project for someone at UND: How much water at 110 degrees would it take to thaw, say, 3 feet of ice for 200 miles? Remember, we could build a pipeline halfway up and start putting heated water in there, too." Article posted December 21, 2015 at 02:18 AM GMT • comment (15) • Reads 2167
 Article posted December 16, 2015 at 12:18 PM GMT • comment (12) • Reads 254 Hello Mathematicians! Warm up your brain by going to this site before we dig in to more division. [LINK] Comment in the article and let me know how you did. Which question took you the longest and why? Happy "mental mathing"! Mrs. Smith Article posted December 16, 2015 at 12:18 PM GMT • comment (12) • Reads 254
 Article posted April 20, 2015 at 06:48 PM GMT • comment • Reads 2661 When in the (real) world will you ever need to know order of operations? What's the point with "Please Excuse My Dear Aunt Sally"? Can you find any good videos to share about PEMDAS? Your other mission, should you choose to take it, is to do some research and find other ways/reasons PEMDAS is useful. As always, there are some games for you to show what you know. Do you have a favorite? Using Order of Ops [LINK] Math Expressions with Exponents [LINK] Bracket Basics [LINK] Basket Math [LINK] Article posted April 20, 2015 at 06:48 PM GMT • comment • Reads 2661
 Article posted May 19, 2014 at 06:54 PM GMT • comment • Reads 7762 Here is a great website to get you thinking about both sides of an equation. Tell me what you think! [LINK] Article posted May 19, 2014 at 06:54 PM GMT • comment • Reads 7762
 Article posted April 17, 2014 at 03:11 PM GMT • comment (3) • Reads 1088 Keep practicing the games on PEMDAS from the previous post. Your job today is to visit the sites below and create an article about one of them. If you finish, visit some of your classmates' pages. Don't forget to try increase the number of "reads" on our blog before next week! Order of Operations [LINK] Solving Equations 1 [LINK] Solving Equations 2 [LINK] Solving Equations 3 [LINK] Article posted April 17, 2014 at 03:11 PM GMT • comment (3) • Reads 1088
 Article posted April 17, 2014 at 03:05 PM GMT • comment (1) • Reads 87 When in the (real) world will you ever need to know order of operations? What's the point with "Please Excuse My Dear Aunt Sally"? Can you find any good videos to share about PEMDAS? Your other mission, should you choose to take it, is to do some research and find other ways/reasons PEMDAS is useful. As always, there are some games for you to show what you know. Do you have a favorite? Using Order of Ops [LINK] Math Expressions with Exponents [LINK] Bracket Basics [LINK] Basket Math [LINK] Article posted April 17, 2014 at 03:05 PM GMT • comment (1) • Reads 87
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