Tag: 5th

What me? Irrational?

We’ve found that some students believe that the approximation that their calculators show for irrational numbers is exact.  Here’s an activity that you can advertise as long multiplication review. After they study our calculations have a discussion just to clarify…

Pizza party figuring

In this activity students decide how to divide 2 pizzas amongst 6 adults and 3 pizzas amongst 8 kids.  Fractional pizza parts need to be drawn and considerations discussed about which fractions are greater. Students interpret a fraction as division…

Hexadecimal coloring

Probably most of us have heard of and even used hexadecimal color codes. Don’t you wonder why their number descriptions really make sense? In this activity we first ask students to color in our Golden Spiral by giving them the…

Passover, Easter, and April Fools day – 10 Activities

April Fools Day ideas – We have two strange mathematical riddles to decipher; a “why does this work?” task using the Ghost Whisperer; and Robert Kaplinsky’s Foil Prank.  Take your choice! MP.1, MP3,4.OA, 5.G, 8.EE, 8.SP Peeps – Students estimate the number of Peeps sold…

Mixing colors with food dye

What do you wonder about these recipes for coloring? What would happen if I used the wrong recipe (i.e. cake mix instead of egg dying) for coloring my eggs? Do all of the recipes (cake, icing, and eggs) have basically…

Saint Patrick’s Day

Green, green river – They’re doing it again. In Chicago, the local plumbers union “dye” the Chicago River emerald green.  Students learn the meaning of PPM (parts per million) and  attempt to figure out how much dye is used to sufficiently…

Pi Day is almost here!

6 possible activities! Celebrate π in your school and in your math class with activities that demonstrate how π was derived; visually show why π makes sense; show a surprising place where π is used; increase students ability to measure and long divide; applauds…

Killing bacteria

Use the need for cleanliness during flu season to engage your students. Does it really matter whether you kill 99.9% of the bacteria or 99.999% of the germs? In this 3-act activity we’ve asked students to consider whether these claims…

Movies and the upcoming Oscars

We have 11 activities for your Oscar week. Highest Grossing Movies – Let your students develop their own ideas about compounded percent change while they have the opportunity to speak about the upcoming Academy Awards show. Worldwide box office income is compared…

Is the Iditarod really the Last Great Race on Earth?

The Iditarod Dog Sled Race begins on Saturday, March 4th in Anchorage, Alaska. This long and grueling competition is called the Last Great Race on Earth. Students do some rate, distance, and hardship comparisons to decide if they agree that the…

Curling

Friction, score-keeping, trajectory and weirdness are the main concepts in this activity.  Curling is not a well-understood sport but the science and strategy are easily understood and enjoyed. Let your students watch this video to get a feel for the…

Is this a Leap year?

Will we have a 29th of February this year?  How can you tell? Students work with a flow chart to deduce what years are going to be leap years.  They learn about the exact measurement of a solar year and…

Olympic rankings

Check out the two images of the 2008 summer Olympic medal counts.  What do you notice? The Olympic Games are competitions between athletes in individual or team events and are not meant to be between countries. The International Olympic Committee…

Valentine’s Day and the Lunar New Year

Which Sweet Heart candies are the best deal? – Students decide which quantity of Sweet Heart candies is the best deal.  Ratio tables, unit ratios, devising convincing arguments. 6.RP.2, 6.RP.3, 7.RP.2 Sweetheart Candies – unit rate and ratio activity using those little candy…