Similar to other procedures in your classroom, there are several elements that must be in place to ensure students get the most from their Number Talk experiences. These elements are: A safe environment Problems of various levels of difficulty that can be solved in a variety of ways Concrete models Opportunities to think first and then check Interaction Self-correction For further details on implementing Number Talks, see: Estimation 180 Estimation is a skill that has many applications, such as checking computation answers quickly. Engaging in regular estimation activities will develop reasoning skills, number sense, students’ and increase their repertoire of flexible and efficient strategies. As students gain more experiences with estimation, their accuracy will improve. According to John Van de Walle, there are three types of estimation that students should practice: Measurement estimation determining an approximate measurement, such as weight, – length, or capacity Quantity estimation approximating the number of items in a collection – Computational estimation determining a number that is an approximation of a – computation One resource which provides contexts for all three types of estimation is Andrew Stadel’s website, . In his website, Mr. Stadel has posted daily estimation contexts. Here are his directions for using his website: Click on a picture. Read the question. Look for context clues. Make an estimate. Tell us how confident you are. Share your reasoning (what context clues did you use?). See the answer.
Similar to other procedures in your classroom, there are several elements that must be in place to ensure students get the most from their Number Talk experiences. These elements are: A safe environment Problems of various levels of difficulty that can be solved in a variety of ways Concrete models Opportunities to think first and then check Interaction Self-correction For further details on implementing Number Talks, see: Estimation 180 Estimation is a skill that has many applications, such as checking computation answers quickly. Engaging in regular estimation activities will develop students’ reasoning skills, number sense, and increase their repertoire of flexible and efficient strategies. As students gain more experiences with estimation, their accuracy will improve. According to John Van de Walle, there are three types of estimation that students should practice: Measurement estimation – determining an approximate measurement, such as weight, length, or capacity Quantity estimation – approximating the number of items in a collection Computational estimation – determining a number that is an approximation of a computation One resource which provides contexts for all three types of estimation is Andrew Stadel’s website, . In his website, Mr. Stadel has posted daily estimation contexts. Here are his directions for using his website: Click on a picture. Read the question. Look for context clues. Make an estimate. Tell us how confident you are. Share your reasoning (what context clues did you use?). See the answer.
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