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It will be good if you provide a picture of the one who discover.
Good MLA format Citations, many detail evidence, but I prefer to use more simple words to let people in our age easier to understand.
I really like the way you design the padlet, It looks organised and

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Missing the photo of the people that found it.
I like how everything is labeled well and clear. There are a lot of detail.

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Picture link:
http://www.ebay.co.uk/itm/500g-Magnetite-Fe3O4-High-Grade-Magnetic-Powder-Black-Iron-II-III-Oxide-/252429894108

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Picture link:
http://latitude.en.alibaba.com/product/119967207-103226992/Fe2O3_Iron_Oxide.html

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Picture link:
https://en.wikipedia.org/wiki/Iron(II)_oxide

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Iron is the most abundant element in the total composition of the planet.

Picture link:
https://en.wikipedia.org/wiki/Iron

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Iron production for tools began as early as 3600 BC.

Picture link:
https://www.timetoast.com/timelines/ancient-egypt-timeline--24

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Steel can be as much as one thousand times harder than pure iron

Picture link:
https://www.linkedin.com/pulse/why-steel-so-important-our-communities-matt-reichenthal

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Iron is the sixth most common element in the universe.

Picture link:
http://www2.latech.edu/~upali/chem481/Chem481c1.htm

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The element symbol for iron is Fe, which comes from the Latin word for iron, "ferrum".

Picture link:
https://www.spreadshirt.co.uk/ferrum+fe+element+26-A25112651

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http://www.chemicalelements.com/elements/fe.html
webmaster@chemicalelements.com, Yinon Bentor -. Chemical Elements.com - Iron (Fe), www.chemicalelements.com/elements/fe.html.

https://www.chemicool.com/elements/iron.html
says, aILICE, et al. “AILICE.” Chemicool, www.chemicool.com/elements/iron.html.
https://www.reference.com/history/discovered-iron-9b8b601158f9387f
“Who Discovered Iron?” Reference, IAC Publishing, www.reference.com/history/discovered-iron-9b8b601158f9387f.

www.aimsteel.com/importance-of-steel.html“The Importance of Steel in Today's Construction.” Aim Steel International, 19 Jan. 2015, www.aimsteel.com/importance-of-steel.html.https://www.thoughtco.com/interesting-iron-facts-606469Helmenstine, Ph.D. Anne Marie. “Interesting Facts About Iron.” ThoughtCo, www.thoughtco.com/interesting-iron-facts-606469.http://www.knowledgedoor.com/2/elements_handbook/iron.html“Iron | The Periodic Table at KnowledgeDoor.” KnowledgeDoor,

https://www.hobart.k12.in.us/ksms/PeriodicTable/iron.htm
#26 - Iron - Fe, www.hobart.k12.in.us/ksms/PeriodicTable/iron.htm.

https://www.emaze.com/@ATTZRQQZ/FE(IRON)
“FE(IRON).” Emaze Presentations, www.emaze.com/@ATTZRQQZ/FE(IRON).
https://www.lenntech.com/feedback/feedback_uk.htm?ref_title=Iron&id=email
“Water Treatment Solutions.” Lenntech Water Treatment & Purification, www.lenntech.com/feedback/feedback_uk.htm?ref_title=Iron&id=email.
https://www.emaze.com/@AQZWTOOF/periodic-table
“Periodic Table.” Emaze Presentations, www.emaze.com/@AQZWTOOF/periodic-table.
https://www.britannica.com/science/iron-chemical-element

http://www.chemicalelements.com/groups/transition.html
The Editors of Encyclopædia Britannica. “Iron (Fe).” Encyclopædia Britannica, Encyclopædia Britannica, Inc., 26 Jan. 2017, www.britannica.com/science/iron-chemical-element.
https://www.webelements.com/iron/history.html
Winter, Mark. “Iron: Historical Information.” Iron»Historical Information [WebElements Periodic Table],

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From the Anglo-Saxon word "iron" or "iren" (the origin of the symbol Fe comes from the Latin word "ferrum" meaning "iron"). Possibly the word iron is derived from earlier words meaning "holy metal" because it was used to make the swords used in the Crusades.

Picture link:
https://www.aliexpress.com/store/product/S0170-GOLD-NOBLE-KNIGHT-CRUSADER-TEMPLAR-SWORD-W-WALL-MOUNT-SCABBARD-42-7/1513393_32617360812.html

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Where is iron found on the periodic table

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Where is iron found on the periodic table

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Fe (Iron)
Atomic number: 26
Picture link: http://www.knowledgedoor.com/2/elements_handbook/iron.html

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Other elements that iron is related to or has relationships with (molecules or compounds).

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Other elements that iron is related to or has relationships with (molecules or compounds).

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The 38 elements in groups 3 through 12 of the periodic table are called "transition metals". As with all metals, the transition elements are both ductile and malleable, and conduct electricity and heat. Iron are the transition metal.

Three oxygen compounds of iron are known:

Ferrous oxide, FeO

Ferric oxide, Fe2O3

Ferrosoferric oxide, Fe3O4

https://www.britannica.com/science/iron-chemical-element

http://www.chemicalelements.com/groups/transition.html

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Iron is a lustrous, ductile, malleable, silver-gray metal (group VIII of the periodic table). It is known to exist in four distinct crystalline forms. Iron rusts in damp air, but not in dry air.

Health effects of iron

1. Iron may cause conjunctivitis, choroiditis, and retinitis if it contacts and remains in the tissues. Chronic inhalation of excessive concentrations of iron oxide fumes or dusts may result in development of a benign pneumoconiosis, called siderosis, which is observable as an x-ray change.

2. A more common problem for humans is iron deficency, which leads to anaemia. A man needs an average daily intake pf 7 mg of iron and a woman 11 mg; a normal diet will generally provided all that is needed.

Environmental effects of iron

1. Iron (III)-O-arsenite, pentahydrate may be hazardous to the environment; special attention should be given to plants, air and water. It is strongly advised not to let the chemical enter into the environment because it persists in the environment.

https://www.lenntech.com/feedback/feedback_uk.htm?ref_title=Iron&id=email

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Picture link:
https://www.emaze.com/@AQZWTOOF/periodic-table

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The atomic number, atomic mass, and number of subatomic particles (Protons, neutrons and electrons) in iron.

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The atomic number, atomic mass, and number of subatomic particles (Protons, neutrons and electrons) in iron.

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Name | Iron

Symbol | Fe

Atomic Number | 26

Atomic Mass | 55.845 atomic mass units

Number of Protons | 26

Number of Neutrons | 30

Number of Electrons | 26

Melting Point | 1535.0° C

Boiling Point | 2750.0° C

Density | 7.86 grams per cubic centimeter

Normal Phase | Solid

Family | Transition Metal

Period | 4

Cost | Unknown

https://www.hobart.k12.in.us/ksms/PeriodicTable/iron.htm

Picture link:
https://www.emaze.com/@ATTZRQQZ/FE(IRON)

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What products or processes is iron important in (what problems does it solve, how is it used).

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What products or processes is iron important in (what problems does it solve, how is it used).

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Most of iron is used to make steel - an alloy of iron and carbon - which is in turn used in manufacturing and civil engineering, for instance, to make reinforced concrete. Stainless steel, which contains at least 10.5 percent chromium, is highly resistant to corros. Steel is important because it is one of the most sustainable construction materials, building owners naturally value the flexibility of steel buildings, and the value benefits they provide.

www.aimsteel.com/importance-of-steel.html

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Iron is an ancient element that has no specific date of discovery and no scientist to credit with its detection. The use of iron dates back to the Egyptians, who used it prior to 3400 B.C. The Bible mentions iron several times.

https://www.reference.com/history/discovered-iron-9b8b601158f9387f

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When and where iron was first found (year, city, country)

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When and where iron was first found (year, city, country)

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The first iron used by humans is likely to have come from meteorites. Artifacts made from meteorite iron have been found dating from about 5000 BC (and so are about 7000 years old). In Mesopotamia (Iraq) there is evidence people were smelting iron around 5000 BC. Artifacts made of smelted iron have been found dating from about 3000 BC in Egypt and Mesopotamia. In those times, iron was a ceremonial metal; it was too expensive to be used in everyday life.

https://www.chemicool.com/elements/iron.html

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Picture link
http://www.chemicalelements.com/elements/fe.html