Note 11 - Stock Options and Incentive Plans (Tables)

9 Months Ended

Jan. 31, 2023

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Number of Shares			Weighted Average Grant Date Fair Value
Total shares issued		7,900,000		$	0.42
Forfeited, in prior periods		(50,000	)	$	0.40
Forfeited, during the year ended April 30, 2022		(50,000	)	$	0.40
Forfeited, during the nine months ended January 31, 2023		(875,000	)	$	0.40
Total		6,925,000		$	0.43