Delima is currently developing her understanding of addition and subtraction with whole numbers up to the hundreds. She has become more fluent in solving calculations, although she occasionally still makes mistakes when working with tens and ones. In addition, Delima has started learning about basic geometric shapes such as squares and rectangles by observing objects around her. She uses concrete objects like bricks, beads, pencil boxes, and books to help her understand these concepts more easily. These learning activities help Delima strengthen her understanding of arithmetic and geometric shapes in everyday life.