Part of the popular Sir Cumference series! Baker Pia is back with a handy way of counting by tens and fractions in this fun introduction to the decimal system.

King Arthur has issued a challenge. The first knight to find the sword Edgecalibur will be the next king. Join Sir Cumference, Lady Di of Ameter, and their son,

Join Sir Cumference, Lady Di of Ameter, and their son Radius for wordplay, puns, and problem solving in this geometry-packed math adventure. King Arthur was a g

Sir Cumference, Lady Di of Ameter, and Radius are back in their second Math Adventure! This time, a potion has changed Sir Cumference into a fire-breathing drag

Read Along or Enhanced eBook: Sir Cumference and Lady Di discover “Fracton numbers” while purchasing cloth and cheese at the Fracton Faire. While twofourths