3rd, 4th and 5th Grade Number Talks. The following resources have been created by Mollie Hall using Number Talks: Helping Children Building Mental Math and Computation Strategies (Parrish, 2010). It is recommended that you begin by reading through the book and also the following article: Number Talk Overview.
anomalies. 1  1 : something different, abnormal, peculiar, or not easily classified : something anomalous They regarded the test results as an anomaly. 2  2 : deviation from the common rule : irregularity. 3  3 : the angular distance of a planet from its perihelion as seen from the sun.
The anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4oC to 0oC, and it becomes less dense. The density becomes less and less as it freezes because molecules of water normally form open crystal structures when in solid form. Keep Learning.