Curated OER
How Old Is This Tree?
Students work in pairs to determine the age of a tree using two different methods in this experiment. They collect data about how trees change over time.
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Ring-a-ling
Learners examine a cross section of a tree. They discuss what the rings mean and how they can tell its age. They complete a worksheet to end the lesson.
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History of a Cookie
Students examine tree rings and then research an event for each growth ring. In this history lesson students design a timeline and research topics using books and the Internet.
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Science: The Age of the Redwoods
Students discover how to estimate the age of redwood trees. They measure the trees' diameters by using string to calculate the circumferences. Students conclude by discussing the science of dendrochronolgy.
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Quadrate Lab
Middle schoolers investigate tree stems and conduct an experiment on how non living factors affect living factors. In this tree stems lesson plan, students observe and record physical characteristics, and make predictions on what factors...
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Geometry in Nature
Students examine how the circumference, diameter, and the relationship of Pi of a circle are related. They count the summer rings of a tree to determine its growth.
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Where Have All the Apples Gone?
In this subtraction instructional activity, 2nd graders examine three pictures of apple trees. They use the apple numbers to answer 4 problems.
1 plus 1 plus 1 equals 1
12 Days of Christmas 12 days of Christmas, Christmas, number sequence, numbers
It's time to celebrate the 12 days of Christmas with this fun set of full-color printables that would be ideal for early readers and counters during the holidays.
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Pecans
In this calculator activity, students complete a task using pecans. Students complete 4 short answer questions and a "challenge" question using reasoning skills and calculating their responses.
San Francisco Symphony
Lesson Ideas for Any Music
Music is a wonderful tool you can add to enhance the learning process for every subject. Here is a list of music selections that are categorized by subject, along with some neat teaching suggestions. You'll find songs suited to...
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Probability and Statistics Pre-Test
In this statistics and probability interactive instructional activity, learners answer ten multiple choice questions by applying the principles of probability.
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Passive Voice Verbs Worksheet
In this passive voice verb worksheet, they rewrite 5 sentence using a passive verbs, rewrite 4 sentences to maintain meaning, change 10 sentences to the passive form, and change 10 passive sentences into the active form.
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Mixed Operations Math Word Problems
In this math word problems worksheet, students use their problem solving skills to solve 5 story problems that require them to add, subtract, multiply, and divide.