St. Charles Place Education Foundation
Reading Bear: Er, Ur, Ir Lesson
In this beginning reading module, the instructor models how to pronounce r-controlled vowel words that incorporate "er", "ur", and "ir". Students are prompted to interact with the video segments at various times. Students can choose to...
St. Charles Place Education Foundation
Reading Bear: Er, Ur, Ir Quiz
This site is an interactive quiz to assess knowledge of words with r-controlled vowels. Words with the letters "y", "ie", "ind", and "ild" are included on the assessment. The quiz is designed to follow the "Reading Bear: er, ur, ind, ir"...
University of Kentucky
Uk: Iridium Comics
A 1968 Metal Men comic strip featuring iridium. Not the greatest source of imformation but good for illustrations and fun.
Language Guide
Language Guide: Preterite
This verb conjugation site is a great review of the formation of the forms of the regular preterite forms as well as those with spelling changes, stem-changes, and irregular forms. All sections have links to verb conjugation practice.
TED Talks
Ted: Ted Ed: Iridium: Periodic Table of Videos
The team at Periodicvideos has created a TED-Ed Lesson for every element of the periodic table. Iridium is element 77 and its symbol is Ir. [7:08]
Other
Spanish Programs: Learn Spanish: Free Online Spanish Lesson
This business offers a free online lesson that teaches the use of the two Spanish verb phrases "I want to go" and "I need to go." The lesson is a complete audio/visual tutorial with graphics that identify each word phrase.
Study Languages
Study Spanish: Formal Commands
Excellent explanation of formal commands in Spanish that use the pronouns "usted" and "ustedes." Stem-changers and irregulars are included in this lesson. Ample examples illustrate the formation and use of formal commands. A quiz at the...
Study Languages
Study Spanish: Commands Review Part 1
Great review of regular and irregular command forms for the pronouns tu and usted. A quiz at the end of the lesson tests the student's mastery of these informal and formal command forms.
Study Languages
Study Spanish: Irregular Commands (Tu)
Great introduction to irregular affirmative commands in Spanish that use the pronoun tu: decir, hacer, ir, poner, salir, ser, tener, and venir. A quiz at the end of the lesson tests the student's mastery of these irregular command forms.
Study Languages
Study Spanish: Preterite Part 2
This site is an introduction to four common irregular verbs in the preterite tense: ser, ir, dar, and hacer. A quiz at the end of the lesson tests the student's mastery of these irregular conjugations.
Study Languages
Study Spanish: Regular Verbs Part I
This introduction to conjugating verbs is the first in a series of three lessons,that focus on regular verbs in the present tense. This lesson teaches conjugations that correspond to the pronouns "yo", "nosotros", "usted", and "ustedes"....
Study Languages
Study Spanish: Regular Verbs Part Ii
The second in a series of three lessons,that focus on regular verbs in the present tense. This lesson teaches conjugations that correspond to the pronouns "tu", "el", "ella","ellos", "ellas", and "vosotros". The explanation is thorough...
Chemicool
Chemicool: Iridium
This site from Chemicool and David D. Hsu is a well organized set of tables summarazing all sorts of helpful information on iridium. A good place to find data on physical properties.
NASA
Nasa: Mission: Science: Electromagnetic Spectrum: Infrared Waves
Infrared light lies between the visible and microwave portions of the electromagnetic spectrum. Infrared light has a range of wavelengths, just like visible light has wavelengths that range from red light to violet.
Discovery Education
Discovery Education: The Em Spectrum: Waves of Energy
Students are introduced to the electromagnetic spectrum through this group research activity. Each group investigates a different wavelength range within the em spectrum and reports back to class. Discussion ideas also included.
University of California
Center for Science Education: Gallery
A gallery of astronomy images which depict galaxies, comets, the moon, planets, nebulae, supernovae as seen in various regions of the electromagnetic spectrum. Each image in the gallery is described. Fascinating!
Royal Society of Chemistry
Chemical Society: Iridium
A short summary of iridium's properties and main uses.
California Institute of Technology
Cal Tech: Two Micron All Sky Survey
Learn about the Two Micron All Sky Survey project, in which telescopes and observatories scan the sky for infrared radiation in order to learn more about the Milky Way galaxy. The infrared spectrum is described and its importance to...
Geography 4 kids
Geography4 kids.com: Interactions in the Atmosphere
The atmosphere interacts with ultraviolet light and incoming radiation as featured in this text.
Study Languages
Study Spanish: Irregular Verbs: Estar, Ir, Dar
This introduction to the present tense conjugation of the irregular verbs "dar", "ir" and "estar" is easy to understand and includes a short test at the end to test the student's mastery of this grammar principle.
ClassFlow
Class Flow: Little House on the Prairie
[Free Registration/Login Required] Teachers can use this flipchart while reading a portion of Little House on the Prairie from the third grade Scholastic Literacy Place series. Skills focus on phonics /ir/ and sequencing events.