During a number talk, students are thinking, asking their peers questions, and explaining their own thinking all while the teacher records the thinking. Sherry Parish has written the book Number Talks (Amazon affiliate link) and it offers awesome ideas for Kindergarten to 6th grade. It is definitely an expensive (up to $60 if bought new) but offers great ideas and real-life examples of Number Talks.
noun. Avalanche warning signs. Avalanche warning signs. The definition of avalanche means a massive quantity of something that comes suddenly such as snow, ice, earth or rocks that come loose and speed down a mountain. 1  An example of avalanche is a glacier that splits from a cliff face and hurdles down the side of a mountain.
An avalanche is a rapid flow of snow down a sloping surface. Avalanches are typically triggered in a starting zone from a mechanical failure in the snowpack when the forces on the snow exceed its strength but sometimes only with gradually widening. After initiation, avalanches usually accelerate rapidly and grow in mass and volume as they entrain more snow. If the avalanche moves fast enough some of the snow may mix with the air forming a powder snow avalanche, which is a type of gravity current