Curated OER
Microscope Online
For this microscope worksheet, students use an on line site to answer questions about the history of the microscope, they view objects and identify what each is, they explore different magnifications of the microscope and they answer...
Curated OER
Easily Confused Words: Lead and Led
Although not quite as confusing as their, they're, and there, many people have difficulty with lead, lead (the toxic metallic), and led. Review these basic sentences with your third and fourth graders, and have them complete the...