By Ann Kajander

*Big principles*book covers extra complicated options, with tasks together with One in a Million,” the place childrens use grains of rice to version the likelihood of astronomical odds; Triangular Tessellations,” during which scholars examine the geometry and diversifications created by means of repeating styles; and Fractions of Salaries,” the place childrens use a real-world state of affairs to multiply and divide fractions.

**Read Online or Download Big Ideas for Growing Mathematicians: Exploring Elementary Math with 20 Ready-to-Go Activities PDF**

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**Example text**

Assessment Students could be given another pentomino and asked if it can be placed on the hundreds chart so the average is a certain number. They can explain their reasons for predicting whether this would be possible or not. Extension Activities You might ask students to create pentominoes of different shapes from the ones they already chose and to predict which ones will work and which will not. A more challenging idea would be to work with a different chart pattern; for example, use a chart of even numbers (the “two times” table), or multiples of five, and do the same activity.

E Model 2Â€× 5 using the same method of building a rectangle. The rectangle is nice to use because it’s easy to see that 2Â€× 5 and 5Â€× 2 have the same picture—but it’s turned on its side. q Calculate the answer to (4Â€+Â€3)Â€× (4Â€+Â€2) by adding the numbers in the brackets first, and then multiplying. w Using your rectangle model, build a rectangle to show the multiplication. ) e Is there another way you could think of to add up the area in your rectangle? The sections in this picture might help you: r Now model 4Â€+Â€2.

Exponential: a number written as a base number raised to an exponent (For example, 2³ is an exponential that equals 8. ) 38 Making It Work Objectives Students gain firsthand knowledge about the effect of exponential functions, although naming them is not essential. Students also practice estimation, counting methods, and converting to appropriate units in a real problem-solving context. Materials 4 small bag of rice that has a label showing the weight of the contents 4 measuring cup 4 tablespoon or 16-milliliter measuring spoon Preparation Counting out and measuring or weighing 100 grains of rice in advance may save time, but it is not necessary.