Problems 10 and 11 on page 79 of L.G. Peterson’s 2nd-grade mathematics (Part 1, Lesson 40) focus on logical thinking and geometric sets using Venn diagrams. The exercises require students to identify common properties for shapes and understand intersections by sorting items based on distinct characteristics. For more insights on the Peterson math system, visit VK.com .

плюсы и минусы метода Петерсон для начальной школы