Find Grampy

Find Grampy is a free fractions on a number line game for grades 3–5. Grampy hides behind a fence split into equal parts; type the numerator of his spot and Grammy points you left or right.


FIND GRAMPY
Correct:
Attempts:
Score:
NUMERATOR

Want to find out more about how to play Find Grampy and other popular Visual Fractions games? Play this very quick and fun video now!

Grampy's favorite game is hide and seek. He is hiding at a fractional distance between the beginning and the end of the fence.

When Grampy hides, Grammy will tell you the total number of equally-spaced positions along the fence. That number of equally-spaced positions is the denominator of the fractional distance. The denominator will tell you the size of the spaces. The higher the denominator the smaller the spaces.

The bottom number 5 in the numeral Numeral two - fifths is the denominator. In this example there are 5 equal spaces in the fence.

Grampy will hide at end of a space. You are to determine the number of spaces Grampy traveled along the fence That number is the numerator of the fraction. The numerator tells you the number of pieces Grampy traveled along the fence. You are to guess which equally-spaced position he is hiding at. You will enter the numerator of this fractional distance.

The top number 2 in the numeral numeral two fifthsis the numerator. The numerator tells us which equally-spaced position he is hiding behind.

Grammy will help by pointing to your right if the fraction is too small and to your left if the fraction is too large.

Grampy does not hide himself well.  You will see the top of his head behind the fence.

The computer will keep track of the number of times you find Grampy and the number of tries.

Press the <Report> button to make a report card. This button will open a dialog that asks you to submit your name. You may prefer to submit a code for your name. The <Send> key on the dialog box will open a new browser window with your printable report card.

See the program How to Identify Fractions for more information on numerator and denominator.

Find Grampy at a glance

Find Grampy on a fraction number line: type the numerator of the spot where he hides. Free to play in your browser, with no download or sign-up.

SkillFractions on a number line (numerator and denominator)
Grades3–5 (ages 8-11)
Common Core3.NF.A.2: Represent a fraction a/b on a number line diagram
Plays onChromebooks, laptops and tablets; fits phone screens (HTML5, no Flash)

How to play Find Grampy

  1. Pick a level (start with halves, thirds and fourths). Grammy tells you how many equal spaces the fence has. That number is the denominator.
  2. Grampy hides behind one of the fence posts; only the top of his head shows. Count the spaces from 0 to where he is.
  3. Tap that count (the numerator) on the keypad, or type it, and press OK.
  4. Grammy points right if your fraction is too small and left if it is too large. Try again until you find him.
  5. Find him 5 times to finish a level. Later levels have you tap the spot, go past 1 and use equivalent fractions. Make a report card any time, or switch to the classic game.

Find Grampy questions

What does Find Grampy teach?

It teaches where a fraction sits on a number line. The denominator is the number of equal spaces on the fence, and the numerator is how many spaces Grampy walked from 0. It matches Common Core standard 3.NF.A.2 and suits grades 3 to 5.

How do you win Find Grampy?

Find Grampy in as few tries as you can. A perfect score over 5 or more examples makes you a Find Grampy Search Party Member, and over 10 or more examples a Search Party Leader.

Does Find Grampy work on Chromebooks, iPads and phones?

Yes. It runs in the web browser with no Flash, download or sign-up. The levels version is built for touch screens and also works with a mouse or keyboard. The classic version is still on the same page and shrinks to fit a phone screen.

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