Drag unit squares and pieces of unit squares to fill a triangle or create a different shape. Use the unit square pieces to find the area of the triangle. Similar apps with different features are also available from EDC in Maine, including "Area Blocks (5 Figures)" (https://www.geogebra.org/m/de9WZnCM), which is 5 outlines to fill and can be used to create your own shapes, and Area Blocks (5 Figures & Rectangle)" (https://www.geogebra.org/m/fw7PfwQT), which has the same 5 figures and also has an optional resizable rectangle to help find the areas of the figures.
