Fraction Strips by mathies play online

Use Fraction Strips to represent, compare, order, and operate on fractions. Represent fractions by dragging pieces from the fraction tower into the workspace. Pieces can be placed in a line to form a train. Manipulate the pieces and trains to compare and order fractions or to model fraction operations.

Mathematical Concepts:
Create visual representations that help explore mathematical thinking related to:
Understanding part-whole relationships
Representing, comparing and ordering fractions
Iterating a unit fraction by copying
Exploring the relationship between the number of equal partitions in a whole and the fractional unit (denominator)
Exploring equivalent fractions
Modelling operations with fractions
oplacing pieces beside or between each other, to combine fractions (addition)
oremoving pieces from trains (subtraction)
oaligning trains to compare fractions with or without using comparison bars, including to find differences (subtraction)
ocopying strips or trains to model repeated addition (multiplication)

Features:

Build representations on an infinite workspace
Drag the leftmost piece from a fraction strip in the fraction tower into the workspace to represent a unit fraction (one-half, one-third, etc.)
Drag a piece further along the strip into the workspace (the pieces to the left of it are automatically dragged with it) to represent fractions like two-fourths , five-fifths etc.
Create trains in which the pieces line up precisely
Align trains using the built-in snapping
Copy selected pieces or entire trains
Show/Hide labels on the fraction pieces
Zoom in on selected pieces, zoom out to see more of the workspace, zoom to fit to reorient the workspace so all fraction pieces are on the screen.
Show/Hide rulers underneath trains in the workspace
Show/Hide steppers to use different fractional units on the rulers
Customize the fraction tower: change the colour of pieces and which pieces are included in the tower
Reposition the fraction tower by dragging using the dark blue area at the top and use the double-arrow button to change its height
Identify equivalent fractions using the equivalence bar at the top of the tower.
Step through a history of your work with the undo/redo buttons
Communicate your thinking or highlight various features of your representation using the built-in annotation tool
Import pictures saved on your device. Pictures can be selected, moved, resized, rotated and copied.
Save your work and open previously saved files.