In a grade 6 mathematics class a teacher plans for, delivers and reflects on a lesson focusing on Number and Algebra. In planning the lesson, she articulates a preference for using open-ended problem-solving activities and resources that can cater for a range of abilities. In designing activities, and in selecting resources, she anticipates how particular students will engage with these as learners. During the activity, students work at their own pace, transforming simple numbers into palindromic numbers. The lesson is structured to allow for whole class instruction, peer discussion and individual learning.