Using Data to See Numbers 1) Quantities can be counted and compared. "How many do you have? Show me how you know that." "Which of these two sets has more (fewer) than 10 objects; how do you know? 2) Quantities can be recorded and represented. "Can you record and show how many you counted?" 3) Objects and data can be sorted according to attributes. "Why did you choose to group those together?" "Is there another way you could sort them?" 4) Data can be collected through surveys, counting or measuring. "How can we find out what people like to ____ best? Whom should we ask?" "How can we find out how many ___ each peroson in our class has?" "What can we measure to collect some data? What can we use to measure that?" 5) Data can be organized, represented, interpreted, and used to make predictions. "How can we organize all this information?" "How can we display our data?" "Do you notice any changes or patterns in our data?" "What do you think our data might look like if we take these measurements again later?" This unit develops the following concepts: *Counting and comparing *One to one correspondence *Cardinality *Composing and decomposing *Number Sense *Number relationships: more, less, few, greater than, less than, as many as *Frequency *Range *Categorical and numerical data *Classification *Identifying attributes *Ordering and organizing data *Creating, reading and interpreting displays of data By the end of this unit, students should have the following skills: *Count and write numerals to 20 and beyond *Use tally marks to record numbers and data *Compare sets of objects using one to one correspondence *Conduct a survey *Classify objects and information *Create at least two types of graphic representations (ordered lists, data tables, pictograms, bar graphs, line plots, etc.)