Peter adjusts his hat, gazing out the window at the lively garden below. Today is the day he will start school and, more importantly, begin his quest as an amateur detective. His magnifying glass glints with excitement as he tucks it into his backpack.

Peter steps into the yard, his mind racing with questions about the animals and plants around him. He wonders how many petals are on each sunflower and how many squirrels dash through the trees each day. "If I count them all, maybe I'll find a clue!"

Ms. Rivera, the warm and friendly teacher with a bright scarf, greets the class. "Good morning, detectives! Today, we'll solve a mystery with shapes and numbers," she announces, setting a tray of mysterious objects—triangles, circles, and squares—on each table.

Peter lines up the triangles and counts their sides, tracing each edge with his finger. "One, two, three... every triangle has three sides," he whispers, jotting notes in his detective notebook. He arranges the circles and squares, comparing their sizes and counting their corners. "Circles have no corners, but squares have four!"

Peter spots a ladybug crawling on a leaf and counts its black spots. "Six spots! I wonder if all ladybugs have the same number," he muses, excitement bubbling in his voice. He finds rocks shaped like ovals and leaves with jagged edges, sketching each discovery in his notebook.

Ms. Rivera smiles at Peter. "What did you discover, Detective Peter?" "Shapes and numbers are everywhere, especially in nature! I counted, compared, and sketched clues all day," Peter announces proudly, holding up his notebook filled with drawings of animals, plants, and mysterious shapes. "That’s wonderful detective work," Ms. Rivera says, her eyes twinkling. "Math helps us solve mysteries big and small."

Peter looks up at the evening clouds, imagining shapes and numbers swirling above. "Tomorrow, I'll solve even bigger mysteries," he promises himself, ready for another day of counting, shapes, and adventure.