Mister Brown and Squeaks take a look at some flowers and their pollinators, and learn about special structures that help them work together perfectly! Performance Expectation: 1-LS1-1. Use materials to design a solution to a human problem by mimicking how plants and/or animals use their external parts to help them survive, grow, and meet their needs. Second Grade Next Generation Science Standards Crosscutting Concept: Structure and Function: The way an object is shaped or structured determines many of its properties and functions. Disciplinary Core Idea: LS2.A: Interdependent Relationships in Ecosystems - Plants depend on animals for pollination or to move their seeds around (2-LS2-2). Performance Expectation: 2-LS2-2 Develop a simple model that mimics the function of an animal in dispersing seeds or pollinating plants.