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Total Duration:

31 to 60 Minutes

Materials and Resources:

The book, One Grain of Rice: A Mathematical Folktale, by Demi; small handful of rice

Technology Resources Needed:

Computer, Microsoft Excel or other spreadsheet software, calculators

Background/Preparation:

Vocabulary: patterns, table, Rani (girl's name in the story), raja (Indian king), famine (a drastic shortage)

1.)Procedure:
Explain the objectives of the lesson, and then begin reading the story. (Brief summary of story: During a famine, Rami outsmarts the raja by asking him to give her one grain of rice to be doubled every day, for 30 days.)
Stop reading the story on the ninth day and ask students,"What is the pattern?" Ask students to share the patterns that they have noticed. Students will now predict how many grains of rice she will have on the 30th day. Finish reading the story to see if students' calculations were correct.

2.)Students will be given an opportunity to construct a table illustrating the data in the story using either spreadsheet software or a calculator with paper and pencil. Compare the two methods and their results. Which one was quicker? Which one gave the most accurate results?

Assessment Strategies

1. How many grains of rice did Rani receive in all? (1,073,741,823) More than a billion 2. What did you notice about the grains she received each day? (doubled or multiplied by 2)

Acceleration:

Intervention:

View the Special Education resources for
instructional guidance in providing modifications and adaptations
for students with significant cognitive disabilities who qualify for the Alabama Alternate Assessment.