Create your own tile sets
You can create your own letter-sound tile sets to use in Word Builder by pressing the "new preset" button
next, select the tiles you want to include by pressing on them (if you make a mistake, just press on a tile again to deselect it), then press 'save set' button. Enter a name for your new tile set and you're done!
Now you're ready to help your student read and spell words that only use letter-sound patterns included in the tile set you created. To load it, press the 'load' button as described in the section 'Loading saved presets'.