In this Year 3 math lesson, students review number guessing challenges using hints about digit placement, such as determining numbers based on units and tens digits with problems like identifying the number 94. The lesson emphasizes understanding base ten concepts, teaching students to read, write, and order whole numbers up to 100 using figures and words, and involves exercises like forming numbers such as 6 and 29 using place value charts and base ten resources. Additionally, the lesson is enriched with facts about animals like giraffes and killer whales to integrate learning contextually.