young child delicately touching the beads of an abacus, counting and learning mathematics

counting abacus child young mathematics learning beads delicate calculating exploring numbers countingboard countingframe teaching educational studying mentalmath concentration preschooler arithmetic problemsolving figuring sums calculation focus toddler exploringmaths countingtoy learningmaths beadboard developingskills teachingmaths numberrecognition countingskills countinggame learningnumbers addingsubtracting countingbeads