Adding using Quick Tens
Number Dots Addition with Place Value
Rounding to the nearest 10 or 100
This was inspired by John Ulbright's applet [url=https://www.geogebra.org/m/qDUeV4Qc]https://www.geogebra.org/m/qDUeV4Qc[/url][br]I used his work as a mentor applet in order to learn some coding.
Converting between improper fractions and mixed numbers
Use the sliders to change the numerator and denominator. Watch how the image changes as you move the sliders. [br][br]Look for an easy way to relate the fraction with its equivalent mixed number. In other words, how does the picture demonstrate that [math]\frac{17}{5}[/math] is equivalent to [math]3\frac{2}{5}[/math].
Adding fractions on a number line
Use fractions on a number line to develop an understanding for how to add fractions.