4.A.b.1 Communicate mathematical ideas and reasoning using the vocabulary of mathematics in a variety of ways e.g., using words, numbers, symbols, pictures, charts, tables, diagrams, graphs, and models.
4.D.c.1 Apply estimation techniques using non-standard units.
4.E Statistics and Probability
4.E.a Data Analysis and Statistics
4.E.a.1 Answer and pose questions about collecting, organizing and displaying data. Work with data in the context of real-world situations by formulating questions that lead to data collection and analysis and determining what data to collect and when and how to collect the data.
4.E.a.2 Collect, organize and display data in simple bar graphs and charts, including translating data from one form to the other.
4.F.a.2 Focusing on relationships within patterns as well as extending patterns e.g., patterns and relationships represented with pictures, tables and charts; "what's-my-rule?" patterns using addition and subtraction rules.