Duolingo: Number of skills versus the number of units

 

In the old Duolingo Tree layout, every course had some skills, and now on the new Path (Snake) there are units.
But there is a connection, since in the background, they still have the tree structure, it is just displayed differently.

My guess (based on a few courses I checked) is that there are two new skills appearing in each unit (sometimes only one skill), and there are roughly 10 practice units at the end, so the number of units is close to (skills/2 +10). But not exactly. Sometimes there are more (or fewer) personalized practice units at the end.

The following table was based on https://magyarbagoly.blogspot.com/2022/ ... ourse.html, which in turn was based on http://ardslot.com/duolingocrowns.html

I checked the number of Units on the Duome Forum, based on MatOzone's posts. See also duolingodata.com

Sometimes there are multiple versions of the same course, where I knew, I marked them "old" and "new" .

Here, "old" means that it is old enough to show up in https://liuch.github.io/duolingo_courses_overview/ (FieryCat stopped updating that list in 2021)
"New" means it is the newest version that is available to some users.

I intentionally left out the some numbers for Spanish/French/German/Japanese courses: too many competing versions to keep track.
But I added the number of units for these courses too, and I picked the longest version.

Side note: for Italian, there is a version with 76 skills, which is not included in my beautiful table, but it is newer than the 66 skill version and older than the 98 skill version.

see also:   https://forum.duome.eu/viewtopic.php?t=15140-number-of-skills-versus-the-number-of-units

LANGUAGE	FROM	SKILLS	LESSONS	Words	Units before	Units now
Arabic (AR)	English	46	210	1481	30	30
Chinese (ZS)	English	88	284	1932	57	57
Czech old	English	84	422	2362	54	55
Czech new	English	88	422	2626	57	?
Danish old	English	70	340	2341	45	x
Danish new	English	62	?	?	40	41
Dutch (DN)	English	123	502	2933	79	80
Esperanto (EO)	English	69	364	2389	45	45
Finnish (FI)	English	35	144	1007	23	23
French (FR)	English	a lot	a lot	a lot	[219]	[194]
German (DE)	English	a lot	a lot	a lot	[131]	[102]
Greek old	English	74	278	2010	x
Greek new	English	95	432	3196	61	62
Greek another	English	102	452	3218	?
Haitian Creole (HT)	English	36	125	728	23	23
Hawaiian old	English	38	143	799	24	25
Hawaiian another	English	51	?	?	33	x
Hebrew (HE)	English	84	446	2833	54	56
High Valyrian old	English	38	135	825	?	x
High Valyrian new	English	43	157	982	28	28
Hindi (HI)	English	32	133	656	21	20
Hungarian old	English	78	319	2367	51	x
Hungarian new	English	110	489	3176	71	71
Indonesian (ID)	English	69	310	1882	44	45
Irish (GA)	English	64	292	1711	42	43
Italian old	English	66	405	2784	51	x
Italian new	English	98	565	3753	72	?
Italian newer	English	123	?	?	?	79
Klingon old	English	62	238	1481	x	x
Klingon new	English	65	248	1533	42	43
Korean old	English	65	258	1793	x	x
Korean newer	English	94	351	2230	61	x
Korean newest	English	112	431	2684	72	73
Latin (LA)	English	22	81	538	14	14
Navajo (NV)	English	11	28	143	7	7
Norwegian old	English	172	590	3600	111	x
Norwegian new	English	246	1008	5784	159	161
Polish (PL)	English	67	298	1938	43	44
Portuguese (PT)	English	91	463	2919	75	60
Romanian (RO)	English	62	286	2405	40	41
Russian old	English	79	350	2279	51	x
Russian new	English	95	405	2601	61	62
Scottish Gaelic old	English	107	483	3525	69	?
Scottish Gaelic new	English	120	?	?	?	78
Spanish (ES)	English	a lot	a lot	a lot	[230]	[205]
Swahili old	English	65	195	1257	42	x
Swahili new	English	73	243	1535	47	48
Swedish old	English	66	325	2361	43	x
Swedish new	English	85	376	2549	55	55
Turkish (TR)	English	67	200	1466	43	44
Ukranian (UK)	English	51	209	1108	33	33
Vietnamese old	English	84	320	1661	54	x
Vietnamese new	English	75	336	1775	49	48
Welsh (CY)	English	118	416	2366	69	70
Yiddish (YI)	English	94	382	2297	61	62
Zulu (ZU)	English	20	91	628	13	13
English old	Hungarian	55	285	1952	49	??
English new	Hungarian	?	?	?	?	109?
German (DE)	Hungarian	51	238	1631	44	33?