Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Exchange Rates
Move the exchange rate and the amount of won to see how many dollars you get, and why a rising rate means a weaker won.
Probability
Put red and blue balls in the bag to name the chance in words and as 0, 1/2, or 1, then compare two bags on the same scale.
Bar and Pie Charts
Show the same data as a strip chart and a pie chart, then change the number of items to see how the percentages shift.
Ratio and Proportion
Mix blue and yellow to build the ratio a:b, then discover how multiplying both parts gives equivalent ratios with the same value.
Percentages
Color 100 squares to link percentages with fractions and decimals, and use bar models to find discounted prices.
Saltwater Concentration (Dilution & Evaporation)
Set the concentration (%) of a salt solution, then add water or let it evaporate to see how the unchanging mass of salt determines the new percentage.